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Thermodynamics ...

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  • Question 1
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    One mole of ice is converted into water at 273 K. The entropies of H2O(s) and H2O(l) are 38.20 and 60.01 J mol-1 K-1 respectively. The enthalpy change for the conversion is

  • Question 2
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    Which of the following processes is associated with decrease in entropy ?

  • Question 3
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    Which of the following statements is true ?

  • Question 4
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    Identify the correct statement from the following in a chemical reaction.

  • Question 5
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    For an isolated system, ∆U = 0, then

  • Question 6
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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

  • Question 7
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    The enthalpy of vaporisation 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].

  • Question 8
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    For a particular reversible reaction at temperature T, ∆H and ∆S were found to be both +ve. If Te is the temperature at equilibrium, the reaction would be spontaneous when

  • Question 9
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    When ice melts into water, the entropy

  • Question 10
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    If ∆G is negative, the reaction will be

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