InterviewSolution
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InterviewSolution
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/w, what would be theof each component in the solution? If the density of2.5 A solution of glucose in water is labeled as 10% wmolality and mole fractionsolution is 1.2 g mL, then what shall be the molarity of the solution |
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Answer» 10%w/w solution of glucose in water means 10 g of glucose present in 100g of solution.Therefore, Mass of glucose is 10gMass of water is = 100g- 10g = 90 g = 0.09 kgAnd density = 1.2gmL-1Let us find molalityMolality = Number of moles of solute / Mass of solvent in KgNumber of moles of solute = Mass of glucose / Molar mass of glucoseMolar mass of glucose (C6H12O6)= 6x12 + 12x1 + 6x16=180 g /molNumber of moles of glucose = 10/180 = 0.0556 molesMolality = 0.0556/0.09 =16.7MNow find the molarity ,Molarity = Number of moles of solute / Volume of solution in literDensity = 1.2 g/mlVolume = mass / density= 100 g / 1.2 g/ ml = 83.33 ml = 0.0833 LMolarity = 0.0556/ 0.0833=0.67 M thx |
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