CH-25
pH scale
Chemistry · Secondary 3 · Medium · pH scale
Which statement about the pH scale is correct?
- A solution of pH 9 is 100 times more acidic than one of pH 7.
- A solution of pH 4 is 2 times more alkaline than one of pH 2.
- A solution of pH 2 is 100 times more acidic than one of pH 4.
- A solution of pH 7 is twice as acidic as one of pH 14.
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