Question

1. 25.00 mL of a solution of 0.100 M uric acid(K_a = 1.3 x10^-4), what is thepH?

2. 25.00 mL of asolution of 0.100 M uric acid (K_a= 1.3 x 10^-4), and then adds 25.00 mLof 0.15 M NaOH, what is the pH?

25.00 mL of a solution of 0.100 M uric acid(K_a = 1.3 x10^-4), andthen adds 5.00 mL of 0.15 M HCl, what is the pH?

25.00 mL of a solution of 0.100 M uric acid(K_a = 1.3 x10^-4), andthen adds 15.00 mL of 0.15 M NaOH, what is the pH?

25.00 mL of a solution of 0.100 M uric acid(K_a = 1.3 x10^-4), andthen adds 16.666667 mL of 0.15 M NaOH, what is the pH?

25.00 mL of a solution of 0.100 M uric acid(K_a = 1.3 x10^-4), andthen adds 5.00 mL of 0.15 M NaOH, what is the pH?

Please show step by step explanation.thanks.