A mixture of He, Ne, and N2 gases has a pressure of 1.943 atm. If the pressures of He and Ne are 0.137 atm and 0.566 atm, respectively, what is the partial pressure of N2 in the mixture?A.0.151 atmB.1.943 atmC.1.24 atmD.0.703 atm
Question
A mixture of He, Ne, and N2 gases has a pressure of 1.943 atm. If the pressures of He and Ne are 0.137 atm and 0.566 atm, respectively, what is the partial pressure of N2 in the mixture?A.0.151 atmB.1.943 atmC.1.24 atmD.0.703 atm
Solution
The partial pressure of a gas in a mixture can be found using Dalton's Law of Partial Pressures, which states that the total pressure of a gas mixture is the sum of the partial pressures of each individual gas.
In this case, the total pressure (P_total) is 1.943 atm, the pressure of He (P_He) is 0.137 atm, and the pressure of Ne (P_Ne) is 0.566 atm. We are asked to find the pressure of N2 (P_N2).
According to Dalton's Law, P_total = P_He + P_Ne + P_N2.
We can rearrange this equation to solve for P_N2: P_N2 = P_total - P_He - P_Ne.
Substituting the given values into this equation gives: P_N2 = 1.943 atm - 0.137 atm - 0.566 atm = 1.24 atm.
So, the partial pressure of N2 in the mixture is 1.24 atm. The correct answer is C. 1.24 atm.
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