Consider a Solution of 2 $\times$ 10^-10)

Multiple Choice

Consider a solution of 2.0 M HCN and 1.0 M NaCN (K_a for HCN = 6.2 $\times$ 10^-10) .Which of the following statements is true?

A) The solution is not a buffer because [HCN] is not equal to [CN^-].
B) The pH will be below 7.00 because the concentration of the acid is greater than that of the base.
C) [OH^-] > [H⁺]
D) The buffer will be more resistant to pH changes from addition of strong acid than of strong base.
E) All of the above are false.