Metal compound A reacts with dilute hydrochloric acid to produce effervescence. gas evolved extingui

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2. Acids, Bases and Salts

medium

Metal compound $A$ reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.

Option A

Option B

Option C

Option D

Solution

$\underset{\begin{smallmatrix}
\text{Calcium} \\
\text{carbonate}
\end{smallmatrix}}{\mathop{CaC{{O}_{3(s)\,}}}}\,+\,\underset{Hydrochloricacid}{\mathop{2HCl}}\,\,\to $$\underset{Calcium\text{ }chloride\text{ }}{\mathop{CaC{{l}_{2(aq)}}}}\,\,+\,\underset{Carbon\text{ }dioxide}{\mathop{C{{O}_{2(g)}}}}\,$$\mathop { + {H_2}{O_{(l)}}}\limits_{water} $

Standard 10

Science