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Calculate the maximum efficiency % possi...

Calculate the maximum efficiency % possible from a thermal engine operating between `110^@C and 25^@C`.

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It the free energy change for a reaction at 25^@C be 5.4 Kj Calculate the equilibrium constant for the reaction. State wheather the vaporisation of water at 110^@C in 1 atm pressure is a spontaneous or non spontaneous process.

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Knowledge Check

  • The efficiency of a Carnot heat engine working between temperatures 127^(@)C and 27^(@)C is

    A
    `27/127`
    B
    `100/127`
    C
    `300/400`
    D
    `100/400`

  • The relationship between P_c,V_c and T_c is

    A
    `P_c,V_c=RT`
    B
    `P_c,V_c=3RT_c`
    C
    `P_c,V_c=3/5RT_c`
    D
    `P_c,V_c=3/8RT_c`

  • A carnot engine, whose efficiency is 40% , takes in heat from a source maintained at a temperature of 500 K. It is desired to have an engine of efficiency 60% . Then , the intake temperature must be

    A
    efficiency of Carnot engine cannot be made larger than `50%`
    B
    1200 K
    C
    750 K
    D
    600 K

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