Answered

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.

Verified Answer :

lulu1991

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:The correct answer is (3).

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.

\([H^+]=10\times [H^+]'\)

\(pH=-\log[H^+]'=-\log[\frac{0.01}{10}]=3\)

Hence, the correct answer is (3).

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