MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryGaseous stateDalton's law of partial pressure

The pressure of a 1:4 mixture of dihydrogen and dioxygen enclosed in a vessel is one atmosphere, what would be the partial pressure of dioxygen? (a) 0.8 10 atm x

B.0.008 Nm–2
D.0.25 atm
Explanation

Let number of moles of H2 = 1 Number of moles of 2 O 4 Mole fraction of 2 4 4 O 0.8 1 4 5 Mole fraction 2 1 1 H 0.2 1 4 5 Partial pressure of 2 O mole fraction x 1 atm 0.8 1atm x 0.8 atm 5 2 0.8 10 Nm x 4 2 8 10 Nm x

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