Answer :

it's decreased, as less of the ions dissociate in the solution

Answer:When the pH of the solution is changed from 1 to 2 the concentration of the [tex]H_3O^+[/tex] in solution gets low.

Explanation:

The pH of the solution is defined as negative logarithm of [tex]H_3O^+[/tex] ions concentration in a solution.

[tex]pH=-\log[H_3O^+][/tex]

1. [tex]H_3O^+[/tex] ions concentration when pH is 1

[tex]1=-\log[H_3O^+][/tex]

[tex][H_3O^+]=0.1 M[/tex]

2. [tex]H_3O^+[/tex] ions concentration when pH is 2

[tex]2=-\log[H_3O^+][/tex]

[tex][H_3O^+]=0.01 M[/tex]

When the pH of the solution is changed from 1 to 2 the concentration of the [tex]H_3O^+[/tex] in solution gets low.