A buffer solution
A. contains approximately equal amounts of a weak acid and its conjugate base.
B. increases its properties with an increase in the concentrations of the two buffer components.
C. resists changes in pH.
D. all of the above
I got C is that correct, to is it D?
Thanks
The correct answer is D. "All of the above"
A buffer solution is a solution that resists changes in pH when small amounts of acid or base are added. It consists of approximately equal amounts of a weak acid and its conjugate base.
Option A is correct because a buffer solution does contain approximately equal amounts of a weak acid and its conjugate base. The weak acid can donate protons, while the conjugate base can accept protons, maintaining the pH of the solution.
Option B is correct because a buffer solution's ability to resist changes in pH increases with an increase in the concentrations of the two buffer components. This is because a higher concentration provides more capacity for the buffer to neutralize additional acids or bases that are added to the solution.
Option C is correct because a buffer solution resists changes in pH. It helps to maintain a relatively constant pH value even when small amounts of acid or base are added or when the solution undergoes dilution.
Therefore, all of the options, A, B, and C, are correct, and the correct answer is D.
I don't know what the answer is because I don't know what "approximately" in A means. Some buffer solution may have as much as 10x as much acid as conjugate base. Is that approximate or not? If A is true (and I know B and C are true), then D is the answer. Otherwise, if there is only one answer how do you choose between two correct answers.
So my best guess is this.
If there is only one correct answer, then D must be the only one to choose since both B and C are true and that makes A true by way of reason.