Which, if any, of the following aqueous mixtures would be a buffer system? A)CH ₃COOH, NaH ₂PO ₄ B)H ₂CO ₃, HCO ₃ ⁻ C)H ₂PO ₄ ⁻ _,HCO ₃ ⁻ D)HSO ₄ ⁻ _, HSO ₃ ⁻ E)None of these choices are correct.

Question

Quizplus · Accepted Answer

A buffer system requires a weak acid and its conjugate base or a weak base and its conjugate acid. In option B, we have H2CO3 (weak acid) and HCO3- (conjugate base), which makes it a buffer system. Option A contains CH3COOH (weak acid) but NaHSPO4 is not its conjugate base. Option C contains HPO4- (weak base) but HCO3- is not its conjugate acid. Option D contains HSO4- (weak acid) but HSO3- is not its conjugate base. Therefore, only option B is a buffer system.

Which, If Any, of the Following Aqueous Mixtures Would Be