Which of the following mixtures will be a buffer when dissolved in 1 L of water? A)0.3 mol KCl and 0.3 mol HCl B)0.2 mol HC₂H₃O₂ and 0.1 mol NaOH C)0.4 mol NH₃ and 0.4 mol HCl D)0.2 mol HBr and 0.1 mol NaOH E)0.1 mol Ba(OH)₂ and 0.2 mol HCl

Question

Quizplus · Accepted Answer

A buffer solution requires a weak acid and its conjugate base or a weak base and its conjugate acid. Option B includes the weak acid HC₂H₃ and its conjugate base HC₂S- in the ratio of 2:1, making it a buffer solution. The other options either have only strong acids and bases or only one weak acid or base, which cannot make a buffer solution.

Which of the Following Mixtures Will Be a Buffer When