A gaseous mixture containing 1.5 mol Ar and 3.5 mol CO₂ has a total pressure of 7.0 atm. What is the partial pressure of CO₂?

Question

Quizplus · Accepted Answer

To find the partial pressure of COS, we need to use the mole fraction of COS in the mixture.

Mole fraction of COS = (moles of COS)/(total moles) = 3.5/(1.5 + 3.5) = 0.7

Now, we can use the formula for partial pressure:

Partial pressure of COS = mole fraction of COS x total pressure = 0.7 x 7.0 atm = 4.9 atm

Therefore, the correct answer is C) 4.9 atm.

A Gaseous Mixture Containing 1