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Adding acid to a solution gives no carbon dioxide, but adding zinc gives hydrogen. What nature could the solution already have?

Answer and explanation

Correct answer: Acidic

Zinc can react with an acidic solution and displace hydrogen, producing hydrogen gas; in a simplified equation, zinc plus acid forms a salt and H2. Carbon dioxide, however, appears when an acid reacts with carbonate or hydrogen carbonate. Since acid addition produced no CO2, carbonate is not indicated, while hydrogen from zinc supports an acidic nature. Therefore option A is the best conclusion among the choices.

Related tags

Acidic SolutionZincGas TestsAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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