The total pressure exerted by a mixture of He, Ne and Ar gases is 2.00 atm. What is the partial pressure in atmospheres of Ne given that the partial pressure of He is 0.25 atm and the partial pressure of Ar is 0.50 atm?

Question

Quizplus · Accepted Answer

Since the total pressure exerted by the mixture is 2.00 atm, we can use the formula Ptotal = PHe + PNe + PAr to find the partial pressure of Ne.
Substituting the given values, we get: 
2.00 atm = 0.25 atm + PNe + 0.50 atm
Simplifying, we get:
PNe = 2.00 atm - 0.25 atm - 0.50 atm
PNe = 1.25 atm
Therefore, the partial pressure of Ne is 1.25 atm, which corresponds to answer choice B.

The Total Pressure Exerted by a Mixture of He, Ne