Answer
Ethanoic acid is a weak acid that ionises as follows:
CH3COOH (aq) ⇌ H+ (aq) + CH3COO- (aq)
= 8.39 x 10-6 mol dm-3
pH = - log [H+]
= -log 8.39 x 10-6
= 5.08
转载自savemyexams
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