Question

22.4 liters of water vapour at ntp when condensed to water occupies an volume of ___________.

Answer 1

18 ml or 0.018 l

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We know that if a gas at ntp occupies a volume of 22.4 l it's mass is equal to its molar mass, molar mass of water 18 amu so when water vapour condenses liquid water's mass will be equal to in vapour form hence mass 18 g. Volume =mass/density,

18/1=18 ml