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Why is ethanoic acid considered a weak acid?

Answer and explanation

Correct answer: It ionises only partially in water

Ethanoic acid is a weak acid because only a fraction of its molecules ionise in water and an equilibrium is established: CH3COOH + H2O ⇌ CH3COO− + H3O+. Consequently, its hydronium-ion concentration is lower than that of a strong acid of the same concentration. Weak does not mean insoluble or harmless; ethanoic acid dissolves in water and remains an acid. Therefore option A is correct.

Related tags

Weak AcidEthanoic AcidPartial IonisationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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