100 mL of and 200 mL of are reacted. The volume of water vapour formed at the same temperature and p — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
100 mL of $O_2$ and 200 mL of $H_2$ are reacted. The volume of water vapour formed at the same temperature and pressure is:
Answer: B
💡 Solution & Explanation
$2H_2(g) + O_2(g) \rightarrow 2H_2O(g)$. Volume ratio is $2:1 \rightarrow 2$. 200 mL $H_2$ reacts with 100 mL $O_2$ to give 200 mL $H_2O(g)$.
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