Q. Three containers of the same volume contain three different gases. The masses of the molecules are $m_{1},m_{2}$ and $m_{3}$ and the number of molecules in their respective containers are $N_{1},N_{2}$ and $N_{3}.$ The gas pressure in the containers are $P_{1},P_{2}$ and $P_{3}$ respectively. All the gases are now mixed and put in one of the containers. The pressure $P$ of mixture will be
A) $P < (P_{1} + P_{2} + P_{3})$
B) $P = \frac{P_{1} + P_{2} + P_{3}}{3}$
C) $P = P_{1} + P_{2} + P_{3}$
D) $P > (P_{1} + P_{2} + P_{3})$
Explanation
(c) According to the Dalton’s law of partial pressure, the total pressure will be $P_{1} + P_{2} + P_{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.