Two vessels containing gases A and B are interconnected as shown in the figure. The stopper is opened, the gases are allowed to mix homogeneously. The partial pressures of,A and B in the mixture respectively will be

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8 and 5 atm

9.6 and 4 atm

4.8 and 2 atm

6.4 and 4 atm

answer is C.

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Detailed Solution

Moles of A,nA=pAVART=8×12RT=96RT Moles of B,nB=pBVBRT=8×5RT=40RT Total pressure × total volume =nA+nB×RTp×(12+8)=1RT(96+40)RT⇒ p = 6.8

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