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If one metal gives no gas with an acid and another metal gives gas rapidly with the same acid, what is the correct basis of comparison?

Answer and explanation

Correct answer: Reactivity of metals

The governing concept is the reactivity of metals with acids. A sufficiently reactive metal displaces hydrogen from a dilute acid, producing hydrogen gas, whereas a less reactive metal may show little or no reaction. If gas is evolved rapidly, that metal is reacting faster under the same conditions. Colour, container shape, and the acid’s name do not explain the difference. Therefore option A is correct.

Related tags

Reactivity SeriesMetal Acid ReactionHydrogenAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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