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 in 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 in 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. 48g A = 1 mol. 48g B = 0.5 mol. Total n = 1.5. P = 1.5 * 0.0821 * 546 / 33.6 = 2 atm. Therefore, correct answer is A.

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