If the partial pressure of the diatomic gas is 0.420 atm, what is the total pressure?
Consider the molecular-level representation of a gas with the following components: 6 blue dots, 5 yellow dots, and 3 green pairs (two green dots bonded together). If the partial pressure of the diatomic gas (represented by the green pairs) is 0.420 atm, what is the total pressure of the gas mixture?
1 Answers
The concept here is that the partial pressure of a gas is directly related to the moles of that gas in the mixture. So, if you know the amount of one gas and its partial pressure, and you know the amounts of the other gases, you can calculate the partial pressures of the other gases:
Partial pressure of blue gas = 2X partial pressure of green = 0.840 atm
Partial pressure of yellow gas = 5/3(0.42) = 0.700 atm
Total pressure = 0.420 + 0.840 + 0.700 = 1.960 atm
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