Molarity of a given orthophosphoric acid solution is 3 M. Its normality is
1 N
2 N
0.3 N
9 N
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Which one is correct? |
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When 25 grams of a non–volatile solute is dissolved in 100 grams of water, the vapour pressure is lowered by 2.25 × 10–1 mm. If the vapour pressure of water at 20°C is 17.5 mm, what is the molecular weight of the solute? |
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Concentrated aqueous sulphuric acid is 98% H2SO4 by mass and has a density of 1.80 g mL–1. Volume of acid required to make one litre of 0.1 M H2SO4 is |
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Which of the following can be measured by the Ostwald–Walker dynamic method? |
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One gram of silver gets distributed between 10 cm3 of molten zinc and 100 cm3 of molten lead at 800°C. The percentage of silver still left in the lead layer is approximately |
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Two liquids X and Y form an ideal solution. At 300 K, vapour pressure of the solution containing 1 mole of X and 3 mole of Y is 550 mm Hg. At the same temperature, if 1 mole of Y is further added to this solution, vapour pressure (in mm Hg) ofX and Y in their pure states will be respectively |
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The vapour pressure of water at 23°C is 19.8 mm. 0.1 mole of glucose is dissolved in 178.2 g of water. What is the vapour pressure (in mm) of the resultant solution? |
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Equal volumes of 0.1 M and 0.2 M NaCl solutions are mixed. The concentration of nitrate ions in the resultant mixture will be |
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The elevation in boiling point of a solution of 13.44 g of CuCl2 in 1 kg of water using following information will be (molecular wt. of CuCl2 = 134.4, Kb = 0.52 K molal–1) |
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The freezing point (in °C) of a solution containing 0.1 g of K3[Fe(CN)6] (Mol. Wt. 329) in 100 g water (Kf = 1.86 K kg mol–1) is |
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