A chemist starts her experiments with 25.00 mL of 0.125 mol L-1 NaCN solution. The pKa...

Question

Question

A chemist starts her experiments with 25.00 mL of 0.125 mol L-1 NaCN solution. The pKa of HCN = 9.20.

a) What volume of 0.100 mol L-1 HCl will be required to fully react with the above salt?

b) After the reaction in part a) takes places, will the pH of the solution be acidic, basic or neutral?

c) What volume of 0.100 mol L-1 HCl is needed to adjust the pH of the originally provided solution to pH = 9.00?

Answer 1

Answer #1

Part c i will explain in comment section

Answer 2

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