Write the net ionic equation for the reaction that occurs

Question

Given the following information:

• hydrocyanic acid
• HCN
• K_a = 4.0×10^-10
• nitrous acid
• HNO₂
• K_a = 4.5×10^-4

(1) Write the net ionic equation for the reaction that occurs when equal volumes of 0.236 M aqueous  hydrocyanic acid and sodium nitrite are mixed. It is not necessary to include states such as (aq) or (s). 

___________+________------->__________+__________

(2) At equilibrium the _________(reactants or products will be favored.)

(3) The pH of the resulting solution will be _________

• greater than
• equal to
• less than seven.