(c) mole fraction of KI if the density of 20% (mass/mass) aqueous KI solution is 1♲02 g mL -1. Mass of solution = 1000+15 = 1015g = 1.015 kgġ.015 kg of urea solution contains 15g of urea Mass of solvent (NH 2CONH 2) = 60 g mol -1 Calculate the mass of urea (NH 2CONH 2) required in making 2.5 kg of 0.25 molal aqueous solution.Īns: 0.25 Molal aqueous solution to urea means that (a) 30 g of Co(NO 3)26H 2O in 4♳ L of solution Calculate the molarity of each of the following solutions Calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride.Īns: 30% by mass of C 6H 6 in CCl 4 => 30 g C 6H 6 in 100 g solution Calculate the mass percentage of benzene (C 6H 6) and carbon tetrachloride (CCl 4) if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.Īns: Mass of solution = Mass of C 6H 6 + Mass of CCl 4 Topics and Subtopics in NCERT Solutions for Class 12 Chemistry Chapter 2 Solutions : Section NameĬolligative Properties and Determination of Molar MassĢ.1. NCERT Solutions For Class 12 Chemistry Chapter 2 Solutions Lakhmir Singh Science Class 8 Solutions.PS Verma and VK Agarwal Biology Class 9 Solutions.NCERT Solutions for Class 9 Foundation of IT.
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