For a Solution Equimolar in HCN and NaCN,which Statement Is

Multiple Choice

For a solution equimolar in HCN and NaCN,which statement is false?

A) [H⁺] is equal to K_a.
B) [H⁺] is larger than it would be if only the HCN were in solution.
C) Addition of NaOH will increase [CN^-] and decrease [HCN].
D) Addition of more NaCN will shift the acid-dissociation equilibrium of HCN to the left.
E) Addition of more HCN will shift the acid-dissociation equilibrium of HCN to the right.