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Thermodynamics ...

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    The enthalpies of formation of Al2 O3 and Cr2 O3 are - 1596 kJ and - 1134 kJ respectively. ∆H for the reaction,
    2Al + Cr2 O3 →2Cr + Al2O3 is

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    A substance is carried out through the following transformations.
    The equations ∆S1 + ∆S2 = ∆S3 + ∆S4 + ∆S5

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    At 298 K the entropy of rhombic sulphur is 32.04 J/mol K and that of monoclinic sulphur is 32.68 J/mol K. The heat of their combustion are respectively - 298246 and - 297948 J mol-1. ∆G for the reactions; Srhombic → Smonoclinic will be

  • Question 8
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    The enthalpy of vaporisation of a certain liquid at its boiling point of 35°C is 24.64 kJ mol-1 . The value of change in entropy for the process is

  • Question 9
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    For a spontaneous process, the correct statement (s) is (are)

  • Question 10
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    For an ideal gas, consider only p-V work in going from an initial state X to the final state Z. The final state Z can be reached by either of the two paths shown in the figure.
    Which of the following choice (s) is (are) correct ?

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