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2.82 g of glucose is dissolved in 30 g of water. Calculate the mole fraction of glucose and water? |
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Answer» Mass of glucose = 2.82 g No. of moles of glucose = \(\frac{2.82}{180}\) = 0.016 Mass of water = 30g = \(\frac{20}{18}\) = 1.67 XH20 = \(\frac{1.67}{1.67 +0.016}\) = \(\frac{1.67}{1.686}\) = 0.99 ∴xH20 + xxglucose = 1 0.99 + xglucose = 1 xglucose = 1 – 0.99 = 0.01 |
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