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2 mole of CH4 reacts completely with excess air, if 25 liter of bone dry air is produced at 27^oC and 5 atm, what is the humidity?(a) 45%(b) 80%(c) 95%(d) 143%This question was addressed to me in semester exam.Origin of the question is Material Balance Problems Involving Partial Saturation in chapter Two Phase Gas – Liquid Systems, Phase Rule and Vapor-Liquid Equilibria of Basic Chemical Engineering

Answer»

Correct CHOICE is (b) 80%

Explanation: Moles of BONE dry air = 5, moles of H2O produced = 4, => HUMIDITY = 4/5*100 = 80%.



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