Question

Lime ($CaO$) dissolved in muriatic acid ($HCl$) to form calcium chloride $\left(CaC{l}_2\right)$and water $\left(H_{2}O\right)$.
(a) $X$ moles of $HCl$ would be required to dissolve $8.8$ moles of CaO.
(b)$Y$ moles of $H_{2}O$ would be formed.
Determine the value of $X$ and $Y$.

• A. $X=2,Y=8.8$
• B. $X=2,Y=8.0$
• C. $X=3,Y=8.0$
• D. $X=17.6,Y=8.8$

Answer 1

Answer: (D)

$X=17.6,Y=8.8$

The balanced chemical equation is $CaO+2HCl\to CaC{l}_2+H_{2}O$
(a) 17.6 moles of $HCl$ would be required to dissolve 8.8 moles of $CaO$.
(b)8.8 moles of $H_{2}O$ would be formed.
Thus, $X=17.6$ and $Y=8.8$