Question

Calculate the H+ ion concentration in 0.10 M acetic acid solution. Given that the dissociation constant of acetic acid in water is 1.8 x 10^-5 . Answer is 4.24 x 10^- 4 M

Answer 1

Hi, here is the calculations and the final answer;

The dissociation constant is given as 1.8 x 10-5

So we will then calculate the degree of dissociation

Dissociation constant = C∝²

Where C is the concentration and ∝ is the Degree of dissociation

∝ = √1.8 x 10^-5/0.1

∝ = 0.013

So the concentration of H+ is given as = C∝

This gives 0.013 x 0.1 = 1.34 x 10^-3 M

Answer 2

Based on law of oswald dilution