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In an experiment,the barometric pressure of gas is 1.043 atm, Some H2 was collected over water at 27.0°C.  What is the partial pressure of the dry H2 in the container?

(a) 0.1021 atm

(b) 102.1 atm

(c) 10.21 atm

(d) 1.021 atm

The question was asked in semester exam.

Question is from Distillation topic in chapter Distillation of Food Processing Unit Operations

1 Answer

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Best answer
Correct answer is (d) 1.021 atm

Best explanation: PTotal = 1.056atm

PH2O(at 27°C) = 0.035 atm

Therefore, PTotal = PH2O + PH2

PH2 = PT − PH2O

PH2 = 1.056 atm – 0.035 atm = 1.021 atm

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