10.0 cm3 of a strong acid solution has a pH of 3.What will be the pH of the solution when it is diluted by adding 90.0 cm3 of distilled water?4356
Answers
To answer this question, we need to understand the concept of pH and dilution. pH is a measure of the acidity or basicity of a solution and ranges from 0 to 14. A pH of 7 is considered neutral, below 7 is acidic and above 7 is basic. Strong acids have a pH below 3.
Dilution is the process of adding more solvent (in this case, distilled water) to a solution, which reduces the concentration of the solute (the acid). The total volume of the solution increases, but the amount of solute remains the same.
In this scenario, we have a strong acid solution with a pH of 3 and a volume of 10.0 cm3. When we add 90.0 cm3 of distilled water to it, the total volume becomes 100.0 cm3. The amount of acid remains the same, so we can use the formula:
C1V1 = C2V2
where C1 is the initial concentration of the acid, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.
We know that C1 is strong enough to have a pH of 3, so we can assume that it has a concentration of at least 0.001 M. When we dilute it by adding 90.0 cm3 of water, the final volume becomes 100.0 cm3, and the final concentration becomes:
C2 = (C1V1) / V2 = (0.001 M x 10.0 cm3) / 100.0 cm3 = 0.0001 M
To find the new pH, we need to calculate the concentration of H+ ions in the solution using the formula:
pH = -log[H+]
[H+] = 10^-pH
At pH 3, [H+] = 10^-3 = 0.001 M
So, for the diluted solution, the new [H+] concentration is:
[H+] = 10^-pH = 10^-3.52 = 2.51 x 10^-4 M
Therefore, the new pH of the solution after dilution is:
pH = -log[H+] = -log(2.51 x 10^-4) = 3.60
In conclusion, the pH of the strong acid solution after dilution with 90.0 cm3 of distilled water is 3.60. The dilution process increased the total volume of the solution and decreased the concentration of the acid, resulting in a slightly higher pH value.
To know more strong acid solution click this link-
brainly.in/question/13043512
#SPJ11
Related Questions
Correct question to answer : Wine goes bad soon after opening because the ethanol CH3CH2OH dissolved in it reacts with oxygen O2 gas to form water and aqueous acetic acid CH3COOH, the main ingredient in vinegar. Calculate the moles of ethanol needed to produce 0.900mol of acetic acid. Be sure your answer has a unit symbol, if necessary, and round it to 3 significant digits.Do not answer : Ammonium phosphate ((NH4)3(PO4) is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid with liquid ammonia. Calculate the moles of ammonia needed to produce of ammonium phosphate. Be sure your answer has a unit symbol, if necessary, and round it to significant digits.
Answers
• The balanced equation for the reaction is given by:
CH3CH2OH + O2 → CH3COOH+ H2O• From the above reaction we can see that:
1 mole of ethanol (CH3Ch2OH) produces 1 mol of acetic acid(CH3COOH)
so . x mole of ethanol will produce 0.9mol of acetic acid ....(cross multiply)
xmol ethanol * 1mol acetic = 1mol ethamol* 0.9molacetic
∴ xmol ethanol = 1*0.9 /1
= 0.90 mol
• This means that, 0.90 mol of ethanol, is needed to produce 0.9mol acetic acid,.
What would the mass be of a single atom of copper?
Answers
Answer:
1
atom of
Cu
has a mass of
1.055
×
10
−
22
g
.
how much does it cost to turn ashes into a diamond
Answers
Answer: Cost begins at $2,999 for a .1 carat blue, yellow or colorless diamond.
Explanation:
Answer:
The cost for turning ashes into diamonds varies based on the carat size and diamond color you want. Cost begins at $2,999 for a.1 carat blue, yellow or colorless diamond. Cost goes up based on the amount of time the diamond is in the machine since we can only grow one diamond at a time
Explanation:
Is changing the color of the coin from copper to silver a physical or chemical change?
Answers
Answer:
physical
Explanation:
The zinc (which was already silver) coated the penny. The NaOH dissolved the zinc. (that was what made the water murky) And small pieces of zinc adhered to the penny (coated) It was a physical change because no NEW color was created.
The reaction you will be performing requires a source of chloride ion, which is the required nucleophile. A sodium chloride solution would be much more safe than a hydrochloric acid solution. Why is acid required?.
Answers
Because it provides a very high concentration compared to what is possible with saline.
A high chloride ion concentration shifts the equilibrium position to the right due to Le Chatelier's principle.
Uses of HCL -
Hydrogen Chloride is used in the production of commercial hydrochloric acid. It's HCl, but it's an aqueous solution. It dissociates in water to form hydronium cations and chloride anions. It is a good acidifying agent and is often used as the preferred acid in base number titrations, as stronger acids give more accurate results. Hydrogen chloride has many uses, including cleaning, pickling, electroplating metals, tanning leather, and refining and manufacturing a variety of products.Hydrogen chloride is produced when many plastics are burned. Acute (short-term) inhalation exposure in humans can cause eye, nose, and respiratory tract irritation and inflammation, and pulmonary edema.
To know furthermore about Hydrochloric acid at
https://brainly.com/question/24586675
#SPJ4
its not a question but i wanted to tell you guys that if you guyz like my answers then please don't forget to give like and follow at the same time. I am not forcing you to follow only if you guyz like my answer then like or follow. THANKS FOR READING..
Answers
Answer:
thank you for this oibnki
Answer:
Sure I'll go ahead and like your answers and follow you if that's what you wanted! :)
Explanation:
What can be said about 1 mole of Ag and 1 mole of Au?
Answers
Explanation:
Avogadro's number. What can be said about 1 mol Ag and 1 mol Au? ... They contain the same number of atoms.
1 mole of Ag and 1 mole of Au contain the same number of particle. Therefore, option B is correct.
What is mole ?The International System of Units uses the mole (symbol: mol) as the unit of material quantity. How many elementary entities of a particular substance are present in an object or sample is determined by the quantity of that material. It is specified that the mole contains exactly 6.022140761023 elementary entities.
A mole is defined as the mass of a substance that has the same number of elementary particles as there are atoms in precisely 12.000 g of 12C.
In the periodic chart, group 11 includes the chemical elements roentgenium (Rg), copper (Cu), silver (Ag), and gold (Au). However, no chemical tests have yet been done to demonstrate that roentgenium behaves similarly to the heavier homologue of gold.
Thus, option B is correct.
To learn more about mole, follow the link;
https://brainly.com/question/26416088
#SPJ2
the equivalence point of any acid-base titration can be determined visually from a titration curve by finding the place where
Answers
Answer:
where the slope of the titration curve is the greatest
The titration curve can be used to identify the equivalency point of the titration.The volume of titrant is where the titration curve has the steepest slope.
How do you find the equivalence point on a titration curve?
The equivalency point for acid-base titrations can be identified quite quickly.A simple pH meter is used to measure the pH of the solution being titrated after different amounts of titrant have been introduced to create a titration curve.The curve can then be read to determine the equivalency point. The equivalency point is identified using thermometric titrimetry, which gauges the rate at which a chemical reaction alters temperature.The inflection point in this instance denotes the threshold at which an exothermic or endothermic process is equivalent. The pH of a solution during a titration is represented graphically by a titration curve.The equivalence point in a strong acid-strong base titration is reached when the moles of acid and base are equal, and the pH is 7. The [H+] and [OH] concentrations must be equal at some point to be considered the equivalency point.Just a little bit beyond that is the endpoint, where the indicator color totally changes and the pH shifts from acidic to basic, or vice versa. The precise halfway point between the reactions of the titrant and the acid in the buffer solution is known as the half equivalence point.Because the pKa of the acid and the pH of the solution are equal at the half equivalence point, finding this point is not too difficult. A weak-acid/strong-base titration will have an equivalent point at a somewhat basic pH.The reason for this is that while the acid is not nearly as strong and does not completely dissociate to neutralize each equivalent of the base, the base is stronger and dissociates to a greater extent.To learn more about acid base titration refer
https://brainly.com/question/23687757
#SPJ2
What properties does metals tend to have
Answers
Answer:
1. can conduct heat and electricity.
2. are solid in room temperature except mercury.
3. they are malleable
Answer:
kim loại phổ biến nhất có thể như sắt (e), nhôm (Al), đồng (Cu), vàng (Au), bạc (Ag), Kẽm (Zn)…
Explanatio:
g a 0.1599 gram sample containing an unknown amount of chloride is titrated with a 0.7890 m silver nitrate solution. 30.83 ml of the silver nitrate solution was required to reach the end point of the titration. what is the mass percent of chloride in the original sample?
Answers
To determine the mass percent of chloride in the original sample, we need to first calculate the amount of chloride present in the sample. We can do this by using the balanced equation for the reaction between chloride and silver nitrate:
AgNO3 + Cl- → AgCl + NO3-
First, we need to calculate the number of moles of silver nitrate used in the titration:
moles of AgNO3 = volume (L) x molarity (M) = 0.03083 L x 0.7890 M = 0.02439 moles
Next, we can use the balanced equation to find the number of moles of chloride:
moles of Cl- = moles of AgNO3 = 0.02439 moles
Finally, we can use the number of moles of chloride to calculate the mass of chloride in the sample:
mass of Cl- = moles of Cl- x molar mass of Cl- = 0.02439 moles x 35.5 g/mol = 0.868 g
To find the mass percent of chloride in the original sample, we divide the mass of chloride by the total mass of the sample and multiply by 100%.
mass percent of Cl- = (mass of Cl- / total mass of sample) x 100%
Since we don't know the total mass of the sample, we can use the mass of chloride we just calculated and the formula above to find the mass percent of chloride in the original sample.
mass percent of Cl- = (0.868 g / 0.1599 g) x 100% = 54.3%
So, the mass percent of chloride in the original sample is 54.3%.
To learn more about mass percent:
https://brainly.com/question/26150306
#SPJ4
When hydrochloric acid is poured on limestone, the mixture fizzes, releasing a colorless, odorless gas. The equation for this chemical reaction is located below. What is the identity of the gas?
CaCO3(s) + 2 HCl(aq) ---> CaCl2(aq) + CO2(g) + H2O(l)
Select one:
a. CaCl2
b. CaCO3
c. CO2
d. H2O
Answers
The correct answer is c. CO2, as carbon dioxide is the gas released during the reaction between hydrochloric acid and limestone. Option C
In the chemical reaction between hydrochloric acid (HCl) and limestone (CaCO3), the balanced equation is:
CaCO3(s) + 2 HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)
From the equation, we can see that one of the products is CO2 (carbon dioxide) gas. Therefore, the identity of the gas released when hydrochloric acid is poured on limestone is carbon dioxide (CO2).
Carbon dioxide is a colorless and odorless gas that is commonly produced in various chemical reactions and natural processes. In this reaction, when hydrochloric acid reacts with the calcium carbonate present in limestone, it forms calcium chloride (CaCl2), water (H2O), and carbon dioxide (CO2). The effervescence or fizzing observed is due to the release of carbon dioxide gas.
The calcium chloride and water formed in the reaction remain in the aqueous (liquid) state. However, the carbon dioxide gas is released as a product and can be observed as bubbles or a gas escaping from the reaction mixture.
Therefore, the correct answer is c. CO2, as carbon dioxide is the gas released during the reaction between hydrochloric acid and limestone. Option C
For more such questions on carbon dioxide visit:
https://brainly.com/question/21256960
#SPJ8
which factor affects an objects weight but not its mass?
A. Volume
B.Magnetism
C. Gravity
D Conductivity
Answers
Answer:
Gravity
Explanation:
Gravity is the pull of an object to another object like a human to the Earth. This is weight.
Answer:
C. Gravity
Explanation:
Just Took The Test And Got A Perfect Score. ;)
Keeping Things Cool Suppose you and some friends are going to the beach for the day. You want to bring a cold lunch with you to have later in the day. 1. Think about what happens to something cold at a hot place like the beach. What kind of container should you use to pack your lunch? Explain your reasoning.
Answers
Answer:
The cold lunch would almost thaw like in the warm tempature. Thus then you think you need a better container. The container that would be cooler than your cold lunch. So if you come back it will be more cool than if you had a normal container.
To solve this we must be knowing each and every concept related to energy transfer in thermodynamics. Therefore, the material of the container should be insulator.
What is energy transfer in thermodynamics?
Energy transfer is a phenomenon in which energy transfer from one matter to another matter. Energy can be transferred in two forms that are by doing work or by transferring heat.
To move any object energy is required so work has to be done by the gas to the piston. Heat can be transferred by three ways conduction, convention and radiation. In conduction, when two object are in direct contact, transfer of molecules takes place. The material of the container should be insulator in which heat form inside or from outside can not pass through.
Therefore, the material of the container should be insulator.
Learn more about energy transfer, here:
https://brainly.com/question/18649915
#SPJ5
calcium oxalate, cac2o4, is very insoluble in water. what mass of sodium oxalate, na2c2o4, is required to precipitate the calcium ion from 37.5 ml of 0.104 m cacl2 solution?
Answers
The mass of sodium oxalate, na2c2o4, is required to precipitate the calcium ion from 37.5 ml of 0.104 m cacl2 solution is 0.5226g.
Calcium oxalate is defined as an insoluble salt that remains as a residue containing calcium cations and oxalate anions. Calcium oxalate precipitation is generally used for quantitative calcium analysis in solutions of soluble calcium salts.
The Volume of calcium chloride solution is 37.5 mL
The Concentration of calcium chloride solution is 0.104 M.
he moles of calcium chloride in 37.5 mL of the solution are calculated as follows:
n CaCl2 = 0.104M×(37.5×10−3)L
=0.0039 mole
Calcium oxalate can be precipitated from calcium chloride using the balanced equation:
CaCl2(aq.) + Na2C2O4(aq. )→ 2NaCl(aq.) + CaC2O4(s)
So we get that one mole of sodium oxalate is required to precipitate calcium from one mole of calcium chloride solution that is 1 mole sodium oxalate: 1 mole calcium chloride.
The moles of sodium oxalate required to precipitate calcium from 0.0039 moles of calcium chloride can be calculated as,
n Na2C2O4 = 1 mole of Na2C2O4 / 1moleCaCl2 ×0.0039molCaCl2
=0.0039mole
So the mass of sodium oxalate having molar mass of 134 g/mole is calculated as,
m Na2C2O4 =0.0039mol × 134g/mole
=0.5226g
To learn more about mass
https://brainly.com/question/1838164
#SPJ4
When a 500. gram sample of water at 19.0°C absorbs 8400 Joules of heat, the temperature of the water
will change to
Answers
Answer: 23.0ºC
Explanation:
Just trust me
Should I use flex seal to clean a baby
O yes
O no
O fish are wet birds
O penguins are to dumb to fly
Answers
A student determined the mass of a piece of magnesium ribbon. It was 3.0 g. She then burned the ribbon in oxygen and collected all the pieces of white ash (magnesium oxide). She measured the mass of the ash and it was found to be 5. 0 g. Does her experiment observe the law of conservation of mass? Explain.
Answers
Her experiment doesn't observe the law of conservation of mass
The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed and law of conservation of mass does not says that when any compound burned the ribbon in oxygen and collected all the pieces of white ash then its mass doesn't change its always constant so in the given data
A student determined the mass of a piece of magnesium ribbon and it was 3.0 g she then burned the ribbon in oxygen and collected all the pieces of white ash (magnesium oxide) and then mass of the ash is 0.5g so here when burn the compound the mass changes so this reaction does not followed the law of conservation of mass
Know more about law of conservation of mass
https://brainly.com/question/13119763
#SPJ1
In a container with volume of 25.0 L, there are 40 g of CH4 gas. If the number of gas is reduced to 15.0 L, what is the new amount inmole?
Answers
Answer
1.50 mol
Explanation
Given:
Initial volume, V₁ = 25.0 L
Mass of CH4 gas in 25.0 L container = 40 g
Final volume, V₂ = 15.0 L
From the Periodic Table; molar mass of CH4 = 16.04 g/mol
What to find:
The new amount in mole.
Step-by-step solution:
According to Avogadro’s law: For a confined gas, the volume (V) and number of moles (n) are directly proportional if the pressure and temperature both remain constant. That is:
\(\frac{V_1}{n_1}=\frac{V_2}{n_2}\)n₁ = Mass/Molar mass = (40.0g/16.04 g/mol) = 2.493765586 mol
n₂ is the new amount in mole and can be calculated as follows:
\(\begin{gathered} \frac{25.0\text{ L}}{2.493765586\text{ mol}}=\frac{15.0\text{ L}}{n_2} \\ \text{Cross multiply} \\ n_2\times25.0\text{ L }=15.0\text{ L }\times2.493765586\text{ mol} \\ \text{Divide both sides by 25.0 L} \\ \frac{n_2\times25.0\text{ L}}{25.0\text{ L}}=\frac{15.0\text{ L }\times2.493765586\text{ mol}}{25.0\text{ L}} \\ n_2=1.496259352\text{ mol} \\ To\text{ 3 significant digits} \\ n_2=1.50\text{ mol} \end{gathered}\)The new amount in moles is 1.50 moles
On the luminosity chart, temperature increases as you read it to the right. True or False?
Answers
Answer:
Explanation:
True
definition of diameter?
Answers
Answer:
a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
Explanation:
a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
You are told that a certain container holds 3.8x1024 molecules of water (H2O) at STP. How many grams of water are in the container?
Answers
And you get 3,891.2
Part E
Study the trend of the graph from part C. What would the reaction time be (in seconds) if the water were cooled to
5°C?
Answers
According to the information of the graph we can infer that if the water were cooled to 5°C the reaction time would be close to 30 seconds.
What would the reaction time be if the water were cooled to 5°C?To establish what would the reaction time be if the water were cooled to 5°C we have to analyze the information of the graph specially the trend. In this case, we have to take into account where are located the point that relate time and temperature.
In this case, the trend is more time with less temperature. So if the water were colled to 5°C, the time would be close to 30 seconds.
Learn more about water in: https://brainly.com/question/28465561
#SPJ1
pls help 25 points need answer soon thanks
Answers
WILL GIVE BRAINLIEST ANSWER AND 5 STAR RATING HELP ASAP
if a pipet bulb contains 5 ml of hydrogen gas, how many mL of oxygen gas would be needed to make the optimum mixture?
Answers
Answer:
To determine the volume of oxygen gas needed to make an optimum mixture with 5 mL of hydrogen gas, we need to know the ratio of hydrogen to oxygen in the mixture.
The optimum ratio of hydrogen to oxygen for combustion is 2:1 by volume. This means that for every 2 volumes of hydrogen gas, we need 1 volume of oxygen gas.
Therefore, to calculate the volume of oxygen gas needed to make an optimum mixture with 5 mL of hydrogen gas, we can use the following formula:
volume of oxygen gas = (volume of hydrogen gas) / 2
Plugging in the values, we get:
volume of oxygen gas = (5 mL) / 2
volume of oxygen gas = 2.5 mL
So we would need 2.5 mL of oxygen gas to make an optimum mixture with 5 mL of hydrogen gas
List the stages of the Flowering Plant Life Cycle starting with the seed.
Answers
Answer:
The plant life cycle starts when a seed falls on the ground. There are many different kinds of plant life, but the flowering plants, or angiosperms, are the most advanced and widespread due to their amazing ability to attract pollinators and spread seeds.
bruce wants to make 50 ml of an alcohol solution with a 12% concentration. he has a 10% alcohol solution and a 15% alcohol solution. the equation 0.10x 0.15(50 – x)
Answers
Bruce needs to mix 20 ml of the 10% alcohol solution with 30 ml of the 15% alcohol solution to make 50 ml of a 12% alcohol solution.
To determine the quantities of the 10% and 15% alcohol solutions that Bruce needs to mix, we can set up an equation based on the concentration and volume.
Let's assume that Bruce needs to mix x ml of the 10% alcohol solution and (50 - x) ml of the 15% alcohol solution.
The concentration of the 10% alcohol solution can be represented as 0.10x (since 10% is equivalent to 0.10) and the concentration of the 15% alcohol solution can be represented as 0.15(50 - x).
To achieve a 12% concentration in the final solution, the equation can be set up as follows:
0.10x + 0.15(50 - x) = 0.12(50)
Simplifying the equation, we get:
0.10x + 7.5 - 0.15x = 6
Combining like terms, we have:
-0.05x = -1.5
Dividing both sides by -0.05, we find:
x = 30
Therefore, Bruce needs to mix 20 ml of the 10% alcohol solution with 30 ml of the 15% alcohol solution to make 50 ml of a 12% alcohol solution.
Learn more about alcohol
brainly.com/question/29268872
#SPJ11
The type(s) of intermolecular forces exhibited by hydrogen bromide molecules, HBr, is/are ________.
Answers
The type(s) of intermolecular forces exhibited by hydrogen bromide molecules, HBr, are dipole-dipole interactions and London dispersion forces.
Hydrogen bromide (HBr) is a polar molecule due to the difference in electronegativity between hydrogen and bromine atoms. Bromine is more electronegative than hydrogen, resulting in a partial negative charge on the bromine atom and a partial positive charge on the hydrogen atom. This creates a permanent dipole moment in the HBr molecule. Dipole-dipole interactions occur between the positive end of one molecule (the hydrogen atom) and the negative end of another molecule (the bromine atom). These intermolecular forces are relatively stronger than the London dispersion forces.
In addition to dipole-dipole interactions, hydrogen bromide molecules also experience London dispersion forces. These forces arise due to temporary fluctuations in electron distribution within molecules. Even though HBr is a polar molecule, it can still exhibit London dispersion forces since all molecules, regardless of polarity, have electrons that are constantly in motion. These temporary fluctuations in electron distribution create instantaneous dipoles, leading to attractive forces between neighboring molecules.
Overall, the intermolecular forces in hydrogen bromide (HBr) include both dipole-dipole interactions and London dispersion forces. These forces play a crucial role in determining the physical properties and behavior of HBr, such as boiling point, solubility, and viscosity.
To learn more about intermolecular forces click here:
brainly.com/question/31797315
#SPJ11
How many moles of N2 are needed to make 5.0 moles of NH3?
Answers
Answer:
The answer is "2.5 mole"
Explanation:
The reaction for producing \(NH_3\) can be defined as follows:
Reaction:
\(N_2+ 3H_2 \rightarrow 2NH_3\)
According to the above reaction, to produce 2 moles of \(NH_3\) we need 1 mole of nitrogen:
So, according to the question to produce 5.0 mole \(NH_3\) the required \(N_2\):
\(\Rightarrow \ 5.0 \ mole \ of \ NH_3 \times \frac{1 \ mole\ of \ N_2}{2 \ mole \ of NH_3}\\\\\Rightarrow 5.0 \times \frac{1}{2}\\\\\Rightarrow 2.5\ mole\\\)
To produce 5.0 mole \(NH_3\) we need 2.5 mole \(N_2\)
What are the 2 products of combustion always?
Answers
the form of glycine used by the human body is d‑glycine. methionine has one stereocenter (chiral center). the val side chain does not form hydrogen bonds with other amino acids. methionine is a thiol. proline has an overall charge at physiological ph (7.4). ser and thr are polar amino acids.
Answers
Yes, the form of glycine used by the human body is D-glycine.
Only the R-group of the amino acid glycine, which includes hydrogen, lacks chirality. Many organic compounds have an inherent chirality that gives birth to a variety of isomers. Glycine is the only natural amino acid that is not chiral at the alpha carbon since R is simply a hydrogen. Four stereoisomers of MetO are possible since it has chiral sulphur and chiral carbon.
With other amino acids, the Val side chain does not create hydrogen bonds. An aliphatic amino acid is isoleucine. Its side chain is aliphatic and has the chemical formula (C4H9). Isoleucine does not create a hydrogen bond since it does not include any electronegative atoms. The thiol group is present in the structure of cysteine.
To know about glycine
https://brainly.com/question/33407334
#SPJ4