Question

The pH of a solution decreases by 2.0. How does the hydronium ion concentration of the solution change?

Answer 1

Answer:

hydronium ion concentration will decrease by factor of 100

Explanation:

As we know that form to find pH of the solution is given as

$pH = -Log[H^+]$

so here we know that pH of the solution is decreased by 2

so we have

$pH_1 - pH_2 = 2$

now using above formula

$2 = -Log[H_1^+] + Log[H_2^+]$

so we will have

$Log\frac{H_2^+}{H_1^+} = 2$

$\frac{H_2^+}{H_1^+} = 10^2$

so hydronium ion concentration will decrease by factor of 100

Answer 2

The Hydronium ion concentration increases to 100 times the original concentration (10^2)