A solution of sucrose (molar mass = 342 g mol–1) has been prepared by dissolving 68.5 g of sucrose in 100 g of water. The freezing point of the solution obtained will be (Kf for water = 1.86 K kg mol–1)
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A 5% solution of cane sugar (molar mass 342 g mol–1) is isotonic with 1% of a solution of an unknown solute. The molar mass of unknown solute in g/mol is |
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A 0.0020 m aqueous solution of an ionic compound Co(NH3)5(NO2)Cl freezes at –0.00732°C. Number of moles of ions which 1 mol of ionic compound produces on being dissolved inwater will be (kf = 1.86°C/m) |
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How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO3? The concentrated acid is 70% HNO3. |
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After removing the hard shell of an egg by dissolving in dil. HCl, a semipermeable membrane is visible. If such an egg is kept in a saturated solution of common salt the size of the egg will |
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18 g of glucose (C6H12O6) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at 100°C is |
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A 5.25% solution of a substance is isotonic with a 1.5% solution of urea (molar mass = 60 g mol–1) in the same solvent. If the densities of both the solutions are assumed to be equal to 1.0 g cm–3, molar mass of the substance will be |
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At 80°C the vapour pressure of pure liquid ‘A’ is 520 mm Hg and that of pure liquid ‘B’ is 1000 mm Hg. If a mixture of solution of 'A’ and ‘B’ boils at 80°C and 1 atm pressure, the amount of ‘A’ in the mixture is (1 atm = 760 mm Hg) |
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Solution A contains 7g/L of MgCl2 and solution B contains 7g/L of NaCl. At room temperature, the osmotic pressure of: |
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Which of the following liquid pairs shows a positive deviation from Raoult's law? |
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Density of a 2.05 M solution of acetic acid in water is 1.20 g/mL. The molarity of the solution is |
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