Answer to Question #179396 in General Chemistry for Kyle

Question

 For 15 POINTS: An erlenmeyer flask contains 50.0 mL of an aqueous solution of 0.425 M acetic acid (CH3COOH). Given that acetic acid has a Ka = 1.75 x10^(-5), answer the questions that follow.

(C) Calculate the pH of the resulting solution then the original solution is mixed with 75.0 mL of 0.200 sodium acetate solution. Write answer in THREE SIGNIFICANT FIGURES and complete solutions.

Answer 1

PH = Pka + log(salt/acid)

PH = -log(1.75 ×10^-5) + log(0.200/0.425)

= 4.43