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) This is an example of the common ion effect.
B) The [H⁺] is larger than it would be if only the HCN was in solution.
C) The [H⁺] is equal to the K_a.
D) Addition of more NaCN will shift the acid dissociation equilibrium of HCN to the left.
E) Addition of NaOH will increase [CN^-] and decrease [HCN].