A sample of liquid H2O of mass 18.0 g is injected into an evacuated 7.6 L flask maintained at 27°C. If vapour pressure of water at 27°C is 24.63 mm Hg, what weight percentage of the water will be vapo

Question

A sample of liquid H2O of mass 18.0 g is injected into an evacuated 7.6 L flask maintained at 27°C. If vapour pressure of water at 27°C is 24.63 mm Hg, what weight percentage of the water will be vaporised when the system comes to equilibrium? Assume water vapour behaves as an ideal gas and the volume occupied by water is negligible compared to the volume of the container.

Prashant Kotian · Accepted Answer

Correct answer: A. Initial weight of  2 H O 18 g    2 H O PV n g RT 

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