12 g of Mg (at. mass 24 ) on reacting completely with acid gives hydrogen gas, the volume of which at STP would be

Question

12 g of Mg (at. mass 24 ) on reacting completely with acid gives hydrogen gas, the volume of which at STP would be (A) 22.4 L (B) 44.8 L (C) 11.2 L (D) 6.1 L

Tardigrade Admin · Accepted Answer

Mg +2 HCl arrow MgCl 2+ H 2 24 g Mg evolves 22.4 L H 2 at STP ∴ 12 g Mg evolves H 2 at STP (22.4/24) × 12=11.2 L at STP.

Q. $12 g$ of $M g$ (at. mass $24$ ) on reacting completely with acid gives hydrogen gas, the volume of which at $STP$ would be

22.4 L

44.8 L

11.2 L

6.1 L

$M g + 2 H Cl \to M g C l_{2} + H_{2}$

$24 g M g$ evolves $22.4 L H_{2}$ at STP

$∴ 12 g M g$ evolves $H_{2}$ at STP $\frac{22.4}{24} \times 12 = 11.2 L$ at STP.

Q. 12g of Mg (at. mass 24 ) on reacting completely with acid gives hydrogen gas, the volume of which at STP would be