Which of the following solutions is a good buffer system? A) a solution that is 0.10 M NaCl and 0.10 M HCl B) a solution that is 0.10 M HCN and 0.10 M LiCN C) a solution that is 0.10 M NaOH and 0.10 M HNO₃ D) a solution that is 0.10 M HNO₃ and 0.10 M NaNO₃ E) a solution that is 0.10 M HCN and 0.10 M K Br

Question

Quizplus · Accepted Answer

A good buffer system should have a weak acid and its corresponding conjugate base, or a weak base and its corresponding conjugate acid. In option B, HCN is a weak acid and LiCN is its corresponding conjugate base, making it a good buffer system. Option A and E do not have a weak acid-base pair, while option C and D have strong bases and strong acids, respectively, which cannot act as buffers.

Which of the Following Solutions Is a Good Buffer System