Write a reaction equation showing how a buffer solution made from combining aqueous solutions of HCN and NaCN will neutralize an added base.

A buffer solution was created by combining aqueous solutions of H₂SO₃ and NaHSO₃. Give the balanced chemical equation that illustrates how an added acid will be neutralized in the solution.

Identify which of the following will create a buffer system and provide justification for your answer.

All of the following solutions form a buffer except:

I. 1.0 M H₂CO₃ and 1.0 M NaHCO₃

II. 1.0 M CH₃NH₂ and 1.0 M CH₃NH₃Cl

III. 1.0 M NaOH and 1.0 M HBr

IV. 1.0 M CH₃NH₂ and 1.0 M HBr

V. 1.0 M H₃PO₄ and 1.0 M NaH₂PO₄

 What substance and what quantity of it should be added to a buffer containing 30.0 mL of 0.200 M HF and 30.0 mL of 0.200 M F⁻ to destroy it?