Use R=8.3 J/mol-K wherever required. The condition of air in a closed room is described as follows.

Question:

Use $\mathrm{R}=8.3 \mathrm{~J} / \mathrm{mol}-\mathrm{K}$ wherever required.

The condition of air in a closed room is described as follows. Temperature $=25^{\circ} \mathrm{C}$, relative humidity $=60 \%$, pressure=104 $\mathrm{kPa}$. If all the water vapour is removed from the room without changing the temperature, what will be the new pressure? The saturation vapour pressure at $25^{\circ} \mathrm{C}=3.2 \mathrm{kPa}$.

Solution:

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