JEE Main 2024 Chemistry question
X g of ethylamine is subjected to reaction with NaNO/HCl followed by water; evolved dinitrogen gas which occupied 2.24 L volume at STP. X is × g.
Answer: 45
Solution
2.24 L N₂ = 0.1 mol, so 0.1 mol C₂H₅NH₂ = 4.5 g = 45 × 10⁻¹ g.