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Acetone boils at 56.38^(@)C and a solution of 1.41 g of an organic compound in 20 g of acetone boils at 56.88^(@)C. Calculate the molar mass of the organic compound (Given k_(b) for acetone = 1.67 k kg/ mol). |
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Answer» Solution :`DELTA T_(B) = K_(b) xx ` Molality `Delta T_(b)= k_(b) xx (("mass of SOLUTE/molecular mass")xx 1000)/("mass of SOLVENT")` `(56.88- 56.38) = (1.67 xx (1.41// "Msolute") xx 1000)/(20)` Mass of solute (M) = 235.47 |
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