Question

Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a vessel. What will be the H⁺ ion concentration in the mixture?

(a) 3.7 x 10^-3 M

(b) 1.11 x 10^-3 M

(c) 1.11 x 10^-4 M

(d) 3.7 x 10^-4 M

Answer 1

The correct option is: (d) 3.7 x 10^-4 M

Explanation:

So, H⁺ ion concentration in mixture of equal volume

of these acid solution = 1.11 x 10^-3/3 = 3.7 x 10^-4 M

Comments

Why the last figure is divided by 3?