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Question
Three solutions P, Q and R have pH value of 3.5, 5.2 and 12.2 respectively. Which one of these is a:
- Weak acid?
- Strong alkali?
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Solution
- On a pH scale, acids have a pH less than 7, whereas weak acids have a pH closer to 7. Therefore, Q is a weak acid with a pH of 5.2.
- On a pH scale, acids have pH less than 7 whereas weak acids have pH towards 7. Hence, Q will be a weak acid with pH 5.2.
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