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Question

The pH scale is a measure of ions concentration in a solution.

A
hydroxide
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B
hydrogen
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C
oxygen
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Solution

The correct option is B hydrogen
The pH scale measures the concentration of H+ ions.
The scale ranges from 0-14 at 25 C and is used to specify how acidic or basic a solution is.
At 25 C:
- Solutions with a pH < 7 are acidic
- Solutions with a pH > 7 are basic
- Solution with a pH = 7 are neutral.

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