Question

The number of moles of $C{O}_2$ produced, when $3$ moles of $HCl$ react with excess of $CaC{O}_3$, is:

• A. $1$
• B. $1.5$
• C. $2$
• D. $2.5$

Answer 1

The correct option is B $1.5$

The reaction is $CaC{O}_3+2HCl\to CaC{l}_2+H_{2}O+C{O}_2$.

Thus, $2$ moles of $HCl$ reacts with one mole of calcium carbonate to produce one mole each of calcium chloride, water and carbon dioxide respectively.

Hence, $3$ moles of $HCl$ will react with excess of calcium carbonate to produce $3\times \frac{1}{2}=1.5$ mol of carbon dioxide.

Hence, option B is correct.