of is reacted with excess . The volume of gas evolved at STP is: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
$5.6\text{ g}$ of $Fe$ is reacted with excess $HCl$. The volume of $H_2$ gas evolved at STP is:
Answer: A
💡 Solution & Explanation
$Fe + 2HCl \rightarrow FeCl_2 + H_2$. <br>$\text{Moles } Fe = 5.6 / 56 = 0.1\text{ mol}$. <br>$\text{Moles } H_2 = 0.1\text{ mol} \Rightarrow \text{Volume} = 0.1 \times 22.4 = 2.24\text{ L}$.
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