Question

The equilibrium constant (K_eq) of weak acid HA in the aqueous solution of concentration c (M) is given by

• A. K_eq =
• B. K_eq =
• C. K_eq =
• D. K_eq =

Answer 1

Answer: (B)

K_eq =

Answer 2

CH₃COOH $\rightleftarrows$ H⁺ + CH₃COO^–

c(1 – a) ca ca K_eq =

If a <<1, then a = p_c/p_

\ K_eq =