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Determine the pH of a 1.0 M solution of an unidentified hydroxide compound, assuming the metal ion has a +1 charge.

1. 11
2. 8.0
3. 7.5
4. 13.0

Correct answer: 13.0

Solution

A 1.0 M solution of a monovalent metal hydroxide, being a strong base, completely dissociates in water, resulting in a pH of 13.0.

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