At 30 °C, a solution is prepared by mixing 22.8 g Na2SO4 with 175.0 g water. The vapor pressure of water at 30 °C is 31.8 torr. Assuming total dissociation of the salt, determine: (a) mole fraction of Na2SO4; (b) mole fraction of water; (c) vapor pressure of the solution. (molar mass, g/mol: Na2SO4= 142.04%; water = 18.02) (a) XNa2504 シ (b) Xwater シ(d) Psoln %D %3!

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.