Two similar vessels are connected with a glass tube, and there is a mercury drop in the middle of the glass tube. In one of the vessels there is gas A and in the other one there is gas B. The temperat

Question

Two similar vessels are connected with a glass tube, and there is a mercury drop in the middle of the glass tube. In one of the vessels there is gas A and in the other one there is gas B. The temperature and the pressure of the gases are both equal. The whole system is placed into hot water and initially the mercury drop moves towards the left and then it goes back to the middle position. Which vessel can contain which gas?

TestHub · Accepted Answer

On heating, the monoatomic gas temperature rises quickly since Q = n C V ​ Δ T with smaller C V ​ , so it exerts more pressure initially compared to the diatomic gas. The drop moves left first, so the right vessel holds He and the left holds N 2 ​ .

Physics - Heat & Thermo Question with Solution | TestHub

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