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States Of Matter

Question
CBSEENCH11005848

How do you find the pressure of dry gas collected over water?

Solution

By deducting the aqueous tension at that temperature from the observed pressure of the gas. 
space space space space straight P subscript dry space gas end subscript space equals space straight P subscript obs space minus space straight P subscript straight H subscript 2 straight O end subscript
where space straight P subscript straight H subscript 2 straight O end subscript space equals space aq. space tension. space