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What are $X, Y$ and $Z$ in the following reactions?
$$
\begin{aligned}
& \mathrm{CaCO}_3 \stackrel{\Delta}{\rightleftharpoons} \mathrm{CO}_2+X \\
& X+\mathrm{H}_2 \mathrm{O} \longrightarrow Y \\
& Y+\mathrm{Cl}_2 \longrightarrow Z \\
& X \quad Y \quad Z
\end{aligned}
$$
Options:
$$
\begin{aligned}
& \mathrm{CaCO}_3 \stackrel{\Delta}{\rightleftharpoons} \mathrm{CO}_2+X \\
& X+\mathrm{H}_2 \mathrm{O} \longrightarrow Y \\
& Y+\mathrm{Cl}_2 \longrightarrow Z \\
& X \quad Y \quad Z
\end{aligned}
$$
Solution:
1789 Upvotes
Verified Answer
The correct answer is:
$\begin{array}{lll}\mathrm{CaO} & \mathrm{Ca}(\mathrm{OH})_2 & \mathrm{CaOCl}_2 \cdot \mathrm{H}_2 \mathrm{O}\end{array}$
$\begin{aligned} \mathrm{CaCO}_3 & \stackrel{\Delta}{\rightleftharpoons} \mathrm{CO}_2+\frac{\mathrm{CaO}}{X} \\ \frac{\mathrm{CaO}}{X}+\mathrm{H}_2 \mathrm{O} & \longrightarrow \frac{\mathrm{Ca}(\mathrm{OH})_2}{Y} \\ \frac{\mathrm{Ca}(\mathrm{OH})_2}{y}+\mathrm{Cl}_2 & \longrightarrow \frac{\mathrm{CaOCl}{ }_2}{Z} \cdot \mathrm{H}_2 \mathrm{O}\end{aligned}$
Calcium carbonate is strongly heated until it undergoes thermal decomposition to form calcium oxide and carbon dioxide. The calcium oxide is dissolved in water to form calcium hydroxide.
Calcium carbonate is strongly heated until it undergoes thermal decomposition to form calcium oxide and carbon dioxide. The calcium oxide is dissolved in water to form calcium hydroxide.
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