Density of a gas is found to be 5.46 g/dm^3 at 27°C at 2 bar pressure. Its density at STP will be — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

Since density d = PM/RT, d1 / d2 = (P1 * T2) / (P2 * T1). Given d1 = 5.46 g/dm^3, P1 = 2 bar, T1 = 300 K, P2 = 1 bar, T2 = 273 K: 5.46 / d2 = (2 * 273) / (1 * 300) = 1.82 => d2 = 5.46 / 1.82 = 3 g/dm^3.