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Why is ethanoic acid called a weak acid?

Answer and explanation

Correct answer: It ionises only partially in water

The governing concept is the extent of ionisation. Ethanoic acid, CH₃COOH, establishes a reversible equilibrium in water and only a fraction of its molecules release H⁺ ions: CH₃COOH ⇌ H⁺ + CH₃COO⁻. Hence option A is correct. Complete ionisation characterises a strong acid, while the metal and strong-base descriptions are chemically incorrect.

Related tags

Weak AcidEthanoic AcidIonisationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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