What is the total pressure exerted by a mixture of 0.45 kg mole of benzene, 0.44 kg mole of toluene and 0.23 kg mole of o-xylene at 100°C, if their vapor pressures at 100°C are 1340, 560 and 210 mmHg respectively ?
Correct answer: C
Explanation
Use Dalton's Law: Total pressure is the sum of partial pressures. Partial pressure = mole fraction * pure vapor pressure.