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3 years ago

9

Which could be true about an unknown sample with a pH of 7?

2 answers:

pychu [463]3 years ago

8 0

<h3><u>Answer;</u></h3>

It contains only water.

<h3><u>Explanation;</u></h3>

The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution.
A pH of 7 is neutral. A solution with a pH of 7 is known as neutral solution, such a solution has equal concentration of H+ and OH- concentration. The OH- concentration balances the H+ concentrations in the solution making it neutral.
Pure water is an example of a solution that is neutral, has a pH of 7.

Lelu [443]3 years ago

4 0

Answer:

It contains only water.

Explanation:

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