MCQ
Vapour is injected at a uniform rate in a closed vessel which was initially evacuated. The pressure in the vessel
- AIncrease continuously
- BDecreases continuously
- ✓First increases and then decreases
- DFirst increase and then becomes constant
✓
Answer
Correct option: C.
First increases and then decreases
c
When the number of moles increases, the pressure increases, and at a certain pressure the vapor condenses, so now the pressure decreases
When the number of moles increases, the pressure increases, and at a certain pressure the vapor condenses, so now the pressure decreases
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