Volume of a gas at STP is 1.12 liter. Its mass is 2 g. The density of the gas relative to hydrogen i — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
Volume of a gas at STP is 1.12 liter. Its mass is 2 g. The density of the gas relative to hydrogen is:
Answer: B
💡 Solution & Explanation
$\text{Moles} = 1.12/22.4 = 0.05$. $\text{Molar mass} = 2/0.05 = 40$. $\text{Relative density (V.D.)} = \text{Molar mass} / 2 = 40/2 = 20$. [2]
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