Hydrolith () reacts violently and completely with water to yield calcium hydroxide and dihydrogen ga — Hydrogen Chemistry Question
Question
Hydrolith ($CaH_2$) reacts violently and completely with water to yield calcium hydroxide and dihydrogen gas. How many moles of $H_2$ gas are produced by the complete hydrolysis of exactly $3\text{ moles}$ of Hydrolith?
Answer: 6
💡 Solution & Explanation
The balanced chemical equation is $CaH_2 + 2H_2O \rightarrow Ca(OH)_2 + 2H_2$. Since $1\text{ mole}$ of $CaH_2$ produces $2\text{ moles}$ of $H_2$, $3\text{ moles}$ of $CaH_2$ will produce $3 \times 2 = 6\text{ moles}$ of $H_2$.
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