Question

1. What are the equilibrium concentrations of H3O+, CN-, and HCN in a 0.042 M solution of HCN? What is the pH of the solution?

Ka = 4.0 * 10^-10

[H3O+]-------------- M

[CN-]------------------- M

[HCN]----------------- M

pH----------------------

2. What is the pH of a 1.5 *10^-4 M solution of NaOH? What is the hydronium ion concentration of the solution?

pH----------------------

Hydronium ion concentration --------------------M