A 5.00 L steel cylinder at 298 K contains a mixture of four ideal gases at equilibrium

CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance

Problem

A 5.00 L steel cylinder at 298 K contains a mixture of four ideal gases at equilibrium. Their measured partial pressures are given below. • PH2=0.25 atmP_{\mathrm{H_2}} = 0.25\,\text{atm} • PHe=0.50 atmP_{\mathrm{He}} = 0.50\,\text{atm} • PN2=0.15 atmP_{\mathrm{N_2}} = 0.15\,\text{atm} • PO2=0.10 atmP_{\mathrm{O_2}} = 0.10\,\text{atm} (a) Calculate the mole fraction of each gas in the mixture. (b) Express the composition of the mixture as percent by volume for each gas, and comment on how your results compare to the mole fractions.

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