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Question

190.0 ml of N2 was collected in a jar over water at some temperature, water level inside and outside the jar standing at the same height. If barometer reads 740 mm Hg and aqueous tenstion at the temperature of the experiment is 20 mm Hg, the volume of the gas at 1 atm pressure and at the same temperature would be ?


A

185.0 mL

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B

180.0 mL

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C

195.0 mL

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D

200 mL

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Solution

The correct option is B

180.0 mL


P1 (dry gas) Pwet gas - aqueous tension
=74020=720 mm,V1=190.0ml
P2=1 atm = 760 mm, V2=?;
Apply P1V1=P2V2


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