Q. Two gases $A$ and $B$ having same pressure $p$, volume $V\ $and absolute temperature $T$ are mixed. If the mixture has the volume and temperature as $V$ and $T$ respectively, then the pressure of the mixture is
A) $2p$
B) $p$
C) $\frac{p}{2}$
D) $4p$
Explanation
(a) The total pressure exerted by a mixture of non-reacting gases occupying a vessel is equal to the sum of the individual pressure which each gas exert if it alone occupied the same volume at a given temperature.
For two gases,
$p = p_{1} + p_{2} = p + p = 2p$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.