.) What is the pH of a 0.319 M solution of a weak acid with a Ka = 4.62 x 10- 5.0 ? 2.) If a 0.158 M solution of a weak acid has a pH of 2.0, what

1.) What is the pH of a 0.319 M solution of a weak acid with a Ka = 4.62 x 10-5.0?
2.) If a 0.158 M solution of a weak acid has a pH of 2.0, what is the Ka of the acid?
3.) If a 0.1 M solution of a weak acid is 14.41 % ionized, what is the Ka for the acid?