4.2 understand how the pH scale, from 0-14, can be used to classify solutions as strongly acidic, weakly acidic, neutral, weakly alkaline or strongly alkaline

The pH scale goes from 0-14. The strongest acid has pH0, the weakest acid has a pH6, the strongest alkali has a pH14, the weakest alkali has a pH8 (NOTE: pH7 is neutral, neither acid nor alkali)...



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