A compound exists in the gaseous phase both as monomer (A) and dimer (B). The molecular mass of A is 48. In an experiment, 96 g of the compound was confined to a vessel of volume 33.6 l and heated to

Question

A compound exists in the gaseous phase both as monomer (A) and dimer (B). The molecular mass of A is 48. In an experiment, 96 g of the compound was confined to a vessel of volume 33.6 l and heated to 546 K. What is the pressure developed if the compound exists as dimer to the extent of 50% by weight under these conditions?

Prashant Kotian · Accepted Answer

Correct answer: A. Monomer weight = 50% of 96 g = 48 g (M = 48 => 1.0 mol). Dimer weight = 48 g (M = 96 => 0.5 mol). Total moles n = 1.0 + 0.5 = 1.5. Substituting in PV = nRT: P = 1.5 * 0.0821 * 546 / 33.6 = 2.0 atm.

💡 Solution & Explanation

Practice 22,000+ questions like this