Concept explainers
Interpretation:
A mixture of CH4(g) and C3H8(g) with a total pressure of 425 torr is prepared in a reaction vessel. Just enough O2 (g) is added to allow complete combustion of the two hydrocarbons. The gas mixture is ignited, and the resulting mixture of CO2(g) and H2O(g) is cooled back to the original temperature. If the total pressure of the products is 2.38 atm, the mole fraction of the C3H8 in the original mixture should be calculated.
Concept introduction:
For a mixture of two gases, the sum of mole fraction is 1. Thus, if the value of mole fraction of 1st gas is x then, mole fraction of 2nd gas will be 1-x.
Also, mole fraction is related to partial pressure and total pressure as follows:
Here,
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Chemistry for Engineering Students
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