Question 10.9: Predict whether each of the following pairs of substances co......

General, Organic, And Biological Chemistry [1102665]

Predict whether each of the following pairs of substances could function as a buffer system in aqueous solution.

a. HCl and NaCl b. HCN and KCN

c. HCl and HCN d. NaCN and KCN

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Buffer solutions contain either a weak acid and a salt of that weak acid or a weak base and a salt of that weak base.
a. No. We have an acid and the salt of that acid. However, the acid is a strong acid rather than a weak acid.
b. Yes. HCN is a weak acid, and KCN is a salt of that weak acid.
c. No. Both HCl and HCN are acids. No salt is present.
d. No. Both NaCN and KCN are salts. No weak acid is present.

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