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State Rioult's Ltw. How is It formul.ited for solutions of non-volatile solutes ? Derive expression for Rioult's law when the solute is non-volatile. |
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Answer» Solution :Rioult., law tor solution of non-voliilile solution: The relative lowering of vapour pressure for a solution Is equal to the mole FRACTION of solute when solvent ALONE is VOLATILE. `(P_(A)^(0) - P_(A))/(P_(A)^(0)) = X_(B)` where , `P_(A)^(0) RARR ` vapour pressure of pure component . A. . `P_(A) rarr` Vapour pressure of component .A. `X_(B) rarr ` mole fraction of solute `P_(A)^(0) - P_(A) rarr ` Lowering of vapour pressure `(P_(A)^(0) - P_(A))/(P_(A))rarr` Relative lowering of vapour pressure. |
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