InterviewSolution
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InterviewSolution
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(a) Acetone boils at 56.38^@C and a solution of 1.41g 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). (b) What is reverse Osmosis?Mention one important application of it. |
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Answer» Solution :(a) `AT_(b) = K_(b) XX`molality `AT_(b) = K_(b) xx (molality //( M solute)) xx 1000` / m solvent `(56.88 - 56.38) = 1.67 xx (L .41 // M solute) xx 100%` M solute = 235.47 (b) It is the process of movement of solvent molecules from higher concentration to low concentration by APPLYING pressure greater than osmotic pressure. APPLICATION : It is used in desalination of sea water. |
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