Question

Which of the following solutions is a good buffer system?A solution that is 0.10 M HCN and 0.10 M NaClA solution that is 0.10 M HCN and 0.10 M LiCNA solution that is 0.10 M HNO3 and 0.10 M KNO3A solution that is 0.10 M NaOH and 0.10 M HNO3A solution that is 0.10 M NaCl and 0.10 M HCl

Answer 1

A solution that is 0.10 M HCN and 0.10 M LiCN

Step-by-step explanation:

• A good buffer system contains a weak acid and its salt or a weak base and its salt.
• In this case; A solution that is 0.10 M HCN and 0.10 M LiCN, would make a good buffer system.
• HCN is a weak acid, while LiCN is a salt of the weak acid, that is, CN- conjugate of the acid.