Which of the following set of variables give a straight line with a negative slope when plotted? (P = Vapour pressure; T = Temperature in K)
| y–axis | x–axis | |
|---|---|---|
| (1) | P | T |
| (2) | log10 P | 1/T |
| (3) | log10 P | T |
| (4) | log10 P | log10 1/T |
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The empirical formula of a nonelectrolyte is CH2O. A solution containing 3 g of the compound exerts the same osmotic pressure as that of 0.05 M glucose solution. The molecular formula of the compound is |
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40% by weight solution will contain how much mass of the solute in 1 L solution, density of the solution is 1.2 g/mL? |
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During osmosis, flow of water through a semipermeable membrane is |
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Vapour pressure of pure ‘A’ is 70 mm of Hg at 25°C. It forms an ideal solution with ‘B’ in which mole fraction of A is 0.8. If the vapour pressure of the solution is 84 mm of Hg at 25°C, the vapour pressure of pure ‘B’ at 25°C is |
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When 20 g of naphthoic acid (C11H8O2) is dissolved in 50 g of benzene (Kf = 1.72 K kg mol–1) a freezing point depression of 2 K is observed. The Van’t Hoff factor ‘i’ is |
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A 6% solution of urea is isotonic with |
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1.65 grams of HCl is dissolved in 16.2 grams of water. The mole fraction of HCl in the resulting solution is |
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Molarity of a given orthophosphoric acid solution is 3 M. Its normality is |
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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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