Question

What is the total pressure of gas in a propane tank if propane has a partial pressure of 33.1 atm, nitrogen’s is 1.11 atm, and oxygens is 0.27 atm?

Answer 1

The correct answer is 34.48 atm

Explanation:

According to the Dalton's law, the total pressure of a mixture of gases (which do not react each other) is equal to the sum of the partial pressures of the individual gasses.

We have a mixture with the following individual partial pressures:

P(propane)= 33.1 atm

P(nitrogen)= 1.11 atm

P(oxygen)= 0.27 atm

The total pressure is simply the sum of these partial pressures:

Ptotal = P(propane) + P(nitrogen) + P(oxygen)

= 33.1 atm + 1.11 atm + 0.27 atm

= 34.48 atm