Problem 6: A gas, designated by subscript 1, is to be dissolved in a nonvolatile

Question

Problem 6: A gas, designated by subscript 1, is to be dissolved in a nonvolatile liquid. At a certain press and temperature, the solubility of the gas in the liquid is x1, where x is the mole fraction. Assume that Henry's Law holds, show that the change in solubility with temperature is given by: where deltah1 = h1(liquid solution)- h1(pure gas)at the same pressure and temperature. H1 is the partial molar enthalpy of 1. Based on physical reasoning alone, would you expect deltah1 to be positive or negative?

Explanation / Answer

Ans: Negative. SInce certain quantity has been dissolved in non volatile solution, While dissolving the gas it loses certain amount of heat.

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