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For urea NH(2) CONH(2) (S) , Delta(f) H(...

For urea `NH_(2) CONH_(2) (S) , Delta_(f) H_(298)^(@) = -333.5 kJ`/mol. Find `Delta_(f) U_(298)^(@)` of urea .

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–324.8 kJ/mol
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Calculate DeltaG_(reaction) ("kJ"//"mol") for the given reaction at 300 K A_(2)(g)+B_(2)(g)hArr2Ab(g) and at particle pressure of 10^(-2) bar and 10^(-4) Given : Delta H_(f)^(@) AB =180 kJ//mol," "DeltaH_(f)^(@) A_(2)=60 kJ//mol Delta H_(f)^(@) B_(2) = 29.5 kJ//mol," "DeltaS_(f)^(@) AB=210 J//K-mol Delta S_(f)^(@) A_(2) = 190 kJ//mol," "DeltaS_(f)^(@) B_(2)=205 J//K-mol Use : 2.303 Rxx300=5750 "J"//"mole"

Knowledge Check

  • The value of log_10 K for a reaction A to B is Given: Delta_(r) H_(298 K)^(@) = -54.07 kJ "mol"^(-1) , Delta_(r) S_(298 K)^(@) = 10 JK^(-1) "mol"^(-1) R = 8.314 JK^(-1) "mol"^(-1) 2.303 xx 8.314 xx 298 = 5705

    A
    5
    B
    10
    C
    95
    D
    100

  • The value of log_(10) K for a reaction A iff B is (Given : Delta_(r)H_(298K)^(@)=-54.07 kJ mol^(-1) , Delta_(r)S_(298 K)^(@)=10 JK^(-1) mol^(-1) and R=8.314 JK^(-) mol^(-1), 2.303 xx 8.314xx298=5705 )

    A
    5
    B
    10
    C
    95
    D
    100
    • MOTION-THERMOCHEMISTRY -Exercise - 3
    1. For urea NH(2) CONH(2) (S) , Delta(f) H(298)^(@) = -333.5 kJ/mol. Find...

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    2. On the basis of following data , Evaluate the standard enthalpy of for...

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    3. Calculate Delta(r) H^(@) for Fe(2) O(3) (s) + 3 CO(g) to 2 Fe (s) + 3 ...

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    4. The standard heats of formation of CH(4)(g), CO(2)(g) and H(2)O(g) are...

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    5. a. A cylinder of gas is assumed to contain 11.2 kg of butane. If a nor...

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    6. The molar enthalpy of vaporization of benzene at its boiling point (35...

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    7. When 12.0g of carbon reacted with oxygen to form CO and CO(2) at 25^(@...

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    9. Calculate the enthalpy change when infinitely dilute solution of CaCl(...

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    13. If the enthalpy of formation of HCl (g) and Cl^(- ) (aq) are –92.3 kJ/...

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    14. A sample of 0.16 g CH(4) was subjected to combustion at 27^(@)C in a b...

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