Question

Which gas has the highest partial pressure atmosphere?

• A. $C{O}_2$
• B. $H_{2}O$
• C. $O_2$
• D. $N_2$

Answer 1

The correct option is D $N_2$

Air contains 78% Nitrogen.

Mole fraction of nitrogen in the air is greater than the given gases as it is present in a larger amount than other given gases in the atmosphere. Thus it has the highest partial pressure in the atmosphere.

Hence, option D is correct.