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Which could be true about an unknown sample with a pH of 7? (2 points) It contains only water. It is highly acidic. It has a very high hydroxide ion concentration. It is a solution of HF and water.
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Which could be true about an unknown sample with a pH of 7?

(2 points)

It contains only water.

It is highly acidic.

It has a very high hydroxide ion concentration.

It is a solution of HF and water.

User Filippo Sebastio
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4.5k points

2 Answers

4 votes

Answer:

It contains only water.

Step-by-step explanation:

User Kerrian
by
4.9k points
1 vote

Answer;

It contains only water.

Explanation;

  • 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.
User Paulo Fernando
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4.6k points
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