A0.15 m solution of a weak acid is 3.0 dissociated. calculate ka

The value of equilibrium constant is

Explanation:

We are given:

Percent degree of dissociation = 3.0 %

Degree of dissociation, = 0.03

Concentration of weak acid ([HA]), c = 0.15 M

The chemical equation for the dissociation of weak acid follows:

Initial:                c          -

At Eqllm:              

So, equilibrium concentration of HA =

Equilibrium concentration of

Equilibrium concentration of

The expression of for above equation follows:

Putting values in above equation, we get:

Hence, the value of equilibrium constant is

answer7,570,82356 cubic centimeters;