If 2.0 mol of gas A is mixed with 1.0 mol of gas B to give a total pressure of 1.6 atm,what is the partial pressure of gas A and B? A) P_A = 0.33 atm and P_B = 0.67 atm B) P_A = 0.67 atm and P_B = 0.33 atm C) P_A = 1.0 atm and P_B = 2.0 atm D) P_A = 2.0 atm and P_B = 1.0 atm E) P_A = 1.06 atm and P_B = 0.53 atm

Question

Quizplus · Accepted Answer

The partial pressure of a gas is proportional to its mole fraction in the mixture. Gas A has a mole fraction of 2/3, and gas B has a mole fraction of 1/3. Therefore, P_A = (2/3) * 1.6 atm = 1.06 atm and P_B = (1/3) * 1.6 atm = 0.53 atm.

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