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Thermodynamics ...

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  • Question 1
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    Which of the following processes are spontaneous

  • Question 2
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    Consider the following processes H(KJ/mol)\triangle H(KJ/mol)
    12AB\frac { 1 }{ 2 } A\rightarrow B                                +150+150
    3B2C+D3B\rightarrow 2C+D                      125-125
    E+ADE+A\rightarrow D                          +350+350
    For B+DE+2CB+D\rightarrow E+2C,            H\triangle H will be :

  • Question 3
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    H\triangle H = - 336.2 kcal. What is the value of U\triangle U approximately at 300 K for the same reaction (R = 2 cal degree1degre{ e }^{ -1 } mol1mo{ l }^{ -1 })?

  • Question 4
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    Which of the following is/are correct ?

  • Question 5
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    The reaction 2A(g)A2(g)2A(g)\rightarrow A_{2}(g), will be spontaneous 

  • Question 6
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    Which of the following is/are not correct if reaction quotient (Q)=1?

  • Question 7
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    Given  the following data:
    Substance    ΔH\Delta H(KJ/mol)     S{S^ \circ }(J/mol K)     ΔG   \Delta G\,\,\,(KJ/mol) 
    FeO(s)            -266.3               57.49             -245.12  
    C(Graphite)      0                     5.74                    0
    Fe(s)                 0                     27.28                  0
    CO(g)                -110.5              197.6                -137.15
    Determine at what temperature the following reaction is spontaneous ?
    FeO(s) + C(Graphite)Fe(s) + CO(g){\text{FeO}}\left( {\text{s}} \right){\text{ + C}}\left( {{\text{Graphite}}} \right) \to {\text{Fe}}\left( {\text{s}} \right){\text{ + CO}}\left( {\text{g}} \right)

  • Question 8
    1 / -0

    For the process,CO2(s)CO2(g){\text{C}}{{\text{O}}_{\text{2}}}\left( s \right) \to \,{\text{C}}{{\text{O}}_{\text{2}}}\left( g \right) 

  • Question 9
    1 / -0

    Spontaneity may be observed in following conditions

  • Question 10
    1 / -0

    The correct thermodynamic conditions for the spontaneous reaction at all temperature is:

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