Single Choice

Two gases of equal masses are in thermal equilibrium. If $$P_a, P_b$$ and $$V_a, V_b$$ are their respective pressures and volumes, then which relation. is true?

A$$2 P_aV_a = P_b V_b$$
B$$2 P_a \neq V_a, P_b = V_b$$
C$$\displaystyle \frac{P_a}{V_a} = \frac{P_b}{V_b}$$
D$$P_a V_a = P_b V_b$$
Correct Answer

Solution

Systems are in thermal equilibrium. So, it is an isothermal process.
So, $$P_aV_a=P_bV_b$$


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