Question

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

Answer 1

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

Answer 2

hydronium ion concentration will decrease by factor of 100

Step-by-step 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(H_2^+)/(H_1^+) = 2`

`(H_2^+)/(H_1^+) = 10^2`

so hydronium ion concentration will decrease by factor of 100