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In a chemical equation, what do a downward arrow \(\downarrow\) and an upward arrow \(\uparrow\) written with products respectively indicate?

Answer and explanation

Correct answer: The downward arrow indicates a precipitate, and the upward arrow indicates evolution of a gas.

In a chemical equation, a downward arrow \(\downarrow\) is used for an insoluble solid product that separates from a solution and settles down; this is called a precipitate. An upward arrow \(\uparrow\) is used for a gas evolved during the reaction. Option B reverses the meanings of these two symbols.

Related tags

ScienceClass 10Chemical ReactionsEquationsPrecipitateGas Evolution

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