In which of the following process, a maximum increase in entropy is observed?
dissolution of salt in water
condensation of water
sublimation of naphthalene
melting of ice
Additional Questions
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The enthalpy of vaporization of benzene is +35.3 kJ/mol at its boiling point of 80°C. The entropy change in the transition of vapour to liquid at its boiling point is ______. (in J mol–1 K–1) |
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ΔHvap = 30 KJ/mole and ΔSvap = 75 Jmol–1K–1. Find temperature of vapour, at one atmosphere |
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Standard entropy of X2, Y2 and XY3 are 60, 40 and 50 JK–1mol–1, respectively. For the reaction, $\dfrac{1}{2}$X2 + $\dfrac{3}{2}$Y2 → XY3, ΔH = –30 kJ, to be at equilibrium, the temperature will be |
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The temperature of the system decreases in an ______. |
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Which of the following is an intensive property? |
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The entropy change involved in the isothermal reversible expansion of 2 moles of an ideal gas from a volume of 10 dm3 to a volume of 100 dm3 at 27°C is |
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The Gibbs energy for the decomposition of Al2O3 at 500°C is as follows: $\dfrac{2}{3}$Al2O3 → $\dfrac{4}{3}$Al + O2, ΔrG = +966 kJ mol–1 The potential difference needed for electrolytic reduction of Al2O3 at 500°C is at least |
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For the reversible reaction, A(s) + B(g) ⇌ C(g) + D(g), ΔG° = –350kJ which one of the following statements is true? |
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If one mole of ammonia and one mole of hydrogen chloride are mixed in a closed container to form ammonium chloride gas, then |
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The bond energy (in kcal mol–1) of a C—C single bond is approximately |
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