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The total vapour pressure of 5mol% solut...

The total vapour pressure of 5mol% solution of H 2 S in water at 300K is "40" torr. The vapour pressure of pure water is 18 torr at this temperature. Estimate the total vapour pressure (in torr) of 6mol% solution of H 2 S .[Apply Henry's law and Raoult's law where necessary. Assume H 2 S does not ionise.]

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