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CGP EDU Academic Team
Published on: August 14, 2026
One litre of water is placed in a closed room 2 × 104lit.capacity containing dry air at 27ºC. If aqueous tension at 27ºC is 23 mm. of Hg and density of water is 1 gm/ml, then volume of water that will evaporate is -
Text Solution
Verified by ExpertsThe correct answer is:
B
Let no. of moles H 2 O (g) present in the room = 
= 
= 
= 24.6
∴ mass of water evaporated = 24.6 × 18 gm
= 442.8 gm.
∴ vol. of water evaporated = 442.8 ml.
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