Question

If the partial pressure of oxygen is given by three bar and the partial pressure of the other gas is four bar, then what is a total pressure that is exerted?

(a) 7 bar

(b) 3 bar

(c) 4 bar

(d) 1 bar

This question was addressed to me in unit test.

My question is taken from States of Matter topic in division States of Matter of Chemistry – Class 11

Answer 1

The correct choice is (a) 7 bar

To explain: The total pressure that is exerted is given by the sum of the partial pressure of the gases present. By adding, the sum of the partial pressures is 3bar + 4bar = 7bar, so the total pressure is 7 bar in this case.