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K_b for diethylether is 2.16 K kg "mol"^(-1). Calculate the molar mass of solute when 0.4g of solute present in 40 g of ether, increased the boiling point of ether by 0.17 K. |
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Answer» Solution :WEIGHT of solute =w=0.4 g, Weight of solvent = W=40 g `K_b=2.16 "K KG mol"^(-1) , DeltaT_b`=0.17 K MOLAR mass of solute `=(wxxK_bxx1000)/(WDeltaT_b)=(0.4xx2.16xx1000)/(0.17xx40)=127 "g mol"^(-1)` |
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