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04-04-2019
Chemistry

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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

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14-04-2019

Answer:

A solution that is 0.10 M HCN and 0.10 M LiCN

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.

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