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 Form 4 Acids, Bases and Salts Topical Questions and Answers

(a)Complete the table below to show the colour of the given indicator in an acidic and basic solutions.
(b) How does the PH value of 0.1 M potassium hydroxide solution compare with that of 0.1 M aqueous ammonia? Explain.

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Answer Text:
- The PH of 0.1M potassium hydroxide (KOH) is higher than that of 0.1M aqueous ammonia. KOH is fully dissociated into ions while aqueous ammonia
dissociates partially.