What is the pH of an aqueous solution of 0.080 M sodium cyanide (NaCN)?

What is the pH of an aqueous solution of 0.080 M sodium cyanide (NaCN)?

The acid-dissociation constant of hydrocyanic acid (HCN) at 25.0 deg C is 4.9 x 10^-10. What is the pH of an aqueous solution of 0.080 M sodium cyanide (NaCN)?