of a divalent metal (At. wt. 40) is reacted with excess . If of gas are evolved at STP, find the val — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

$M + 2HCl \rightarrow MCl_2 + H_2$. <br>0.1 mole $M$ gives 0.1 mole $H_2$. <br>$\text{Vol } (x) = 0.1 \times 22.4 = 2.24 \text{ L}$. <br>$10(2.24) / 1.12 = 22.4 / 1.12 = 20$. [4, 15]