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22. When 100g of a saturated solution is evaporated at 50°C, 50g of solid is left over. Find the solubof the substance at 50°C.?

Answer»

Here, at 50°C, the solid solute obtained is = 50 gmSince, we had the saturated solution = 100 gmIt means there must be 50 gm of water in the saturated solutionHence, solubility of solute = (weight of solute in saturated solution/ weight of solvent in saturated solution ) x 100So, at 50°C before the evaporation,solubility = (50/50 ) x 100 = 100



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