How will diluting a buffer solution affect its pH?Question 4AnswerThe pH will remain the same as the concentrations of both weak acid and weak base components remain unchangedThe pH will remain the same as the amounts of both weak acid and weak base components remain unchangedThe pH will decrease as the concentration of the weak acid component will increaseThe pH will increase as the concentration of the weak base component will increase
Question
How will diluting a buffer solution affect its pH?Question 4AnswerThe pH will remain the same as the concentrations of both weak acid and weak base components remain unchangedThe pH will remain the same as the amounts of both weak acid and weak base components remain unchangedThe pH will decrease as the concentration of the weak acid component will increaseThe pH will increase as the concentration of the weak base component will increase
Solution
The pH of a buffer solution will remain relatively unchanged when diluted. This is because a buffer solution is designed to resist changes in pH when small amounts of an acid or a base are added, or when the solution is diluted.
The buffer solution is composed of a weak acid and its conjugate base (or a weak base and its conjugate acid). When you dilute the buffer solution, you are reducing the concentration of both the weak acid and its conjugate base proportionally, so the ratio between them (which determines the pH according to the Henderson-Hasselbalch equation) remains the same.
Therefore, the correct answer is: "The pH will remain the same as the concentrations of both weak acid and weak base components remain unchanged".
Similar Questions
What would happen if a small amount of base were added to a buffered solution?A.The pH would remain about the same.B.The pH would decrease.C.The pH would remain neutral.D.The pH would increase.
Consider a buffer solution prepared by dissolving 0.15 mol of benzoic acid (C6H5COOH) and 0.30 mol of sodium benzoate (NaC6H5COO) in 1.00 L of solution. (Ka of Benzoic acid = 6.3 x 10-5). If 0.05 mol of HCl is added to this buffer solution the pH of the solution will drop slightly. The pH does not drastically decrease because the HCl reacts with the ____ present in the buffer solution.Question 8
A buffer is a solution that ______.Multiple choice question.resists changes in pH when limited amounts of acid or base are addedchanges color when limited amounts of acid or base are added.always has a pH of 7, even when limited amounts of acid or base are addedquickly changes pH when limited amounts of acid or base are added
explain the terms dilute and concentrated (in terms ofamount of substance), and weak and strong (in terms of thedegree of ionisation) in relation to acidsAn opportunity to measurethe pH of different acids atdifferent concentrations.• describe neutrality and relative acidity in terms of the effect onhydrogen ion concentration and the numerical value of pH(whole numbers only)
A chemist prepared a buffer by mixing stock solutions of acetic acid and sodium acetate together to obtain concentrations of [acetic acid] = 0.10 M and [sodium acetate] = 0.15 M in the final solution.However, when they measured the pH of the prepared buffer solution, the pH turned out to be higher than expected according to their calculation. What should the chemist do to fix the pH of the buffer? Question 6AnswerAdd more acetic acidAdd a small amount of waterAdd a small amount of solid NaOHAdd more sodium acetateReduce the volume of the buffer solution by boiling off some solvent
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