Question

A solution with a pH of 2.0 has a hydronium ion concentration ten times greater than a solution with a pH of

(1) 1.0 (3) 3.0
(2) 0.20 (4) 20.

Answer 1

The answer is (3) 3.0. The solution with a pH of 2.0 has greater concentration means the other solution has greater pH. pH=-lg[H+]. So we can get the pH of other solution is 3.

Answer 2

Answer:The correct answer is (3).

Step-by-step explanation:

The pH of the solution is defined as negative logarithm of
`H^+` or hydronium ions ions in the solution.

`pH=-\log[H^+]`

`2=-\log[H^+]`

`[H^+]=0.01 M`

The pH with 10 times the concentration
`H^+` ions.

`[H^+]=10* [H^+]'`

`pH=-\log[H^+]'=-\log[(0.01)/(10)]=3`

Hence, the correct answer is (3).