Two 1-litre flask $\mathrm{A}$ and $\mathrm{B}$ are connected to each other by a valve which is closed.…
Two 1-litre flask $\mathrm{A}$ and $\mathrm{B}$ are connected to each other by a valve which is closed. Flask A has benzene in equilibrium with its vapours at $30^{\circ} \mathrm{C}$. The flask $\mathrm{B}$, is evacuated, and the valve is opened. Which of the following is true. If temperature is kept constant.'
Some of the benzene molecules would move to flask B from flask A.
Vapour pressure will be half the initial value.
The vapour pressure remains unchanged
Some more of the liquid benzene in flask A would evaporate.