Problem: Which of the following statements regarding pH buffers are correct?I A pH buffer is an aqueous solution in which the pH changes less, upon adding a perturbing acid or base, than would that of pure water.II A pH buffer consists of a strong acid and its weak conjugate base, where both are present in significant concentrations.III When NaOH is added to a buffer system, hydroxide ions are absorbed like a sponge by the conjugate base.A. All statements are correctB. Only statements I and II are correctC. Only statements II and III are correctD. Only statement I is correctE. None of the statements is correct

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We’re being asked to determine the correct statement/s regarding pH buffers.


Let's analyze each given statement:

I. A pH buffer is an aqueous solution in which the pH changes less, upon adding a perturbing acid or base, than would that of pure water.

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Problem Details

Which of the following statements regarding pH buffers are correct?

I A pH buffer is an aqueous solution in which the pH changes less, upon adding a perturbing acid or base, than would that of pure water.

II A pH buffer consists of a strong acid and its weak conjugate base, where both are present in significant concentrations.

III When NaOH is added to a buffer system, hydroxide ions are absorbed like a sponge by the conjugate base.

A. All statements are correct

B. Only statements I and II are correct

C. Only statements II and III are correct

D. Only statement I is correct

E. None of the statements is correct

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