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What is the formula of hydrochloric acid?

Answer and explanation

Correct answer: HCl

The governing concept is identifying acids by their chemical formula and composition. Hydrochloric acid consists of hydrogen and chlorine in a 1:1 ratio, so its formula is HCl. When dissolved in water, it ionises to form hydrogen ions and chloride ions. H₂SO₄ is sulphuric acid, HNO₃ is nitric acid, and CH₃COOH is acetic acid. Therefore, option A is unambiguously correct.

Related tags

Hydrochloric AcidChemical FormulaAcids Bases And SaltsClass 10 ScienceAcidsBasesAnd SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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