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For which of the following reaction, cha...

For which of the following reaction, change of enthalpy equals the change in internal energy ?

A

`H_(2)+I_(2)to2HI`

B

`PCl_(5)(g)toPCl_(3)(g)+Cl_(2)`

C

`2H_(2)O_(2)to2H_(2)O_(2)+O_(2)`

D

`C(s)+O_(2)(g)toCO_(2)(g)`

Text Solution

Verified by Experts

The correct Answer is:
A, D
In `(A)` and `(D)` choices, the value of `Deltan(g)=0`. Therefore, `DeltaH=DeltaE`.
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. The standard enthalpies fo formation of CO(2) (g), H(2) O (1), and glu...

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  2. 2H(2)(g)+O(2)(g)to2H(2)O(l)+xkJ In the above reaction

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  3. For which of the following reaction, change of enthalpy equals the cha...

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  4. Which of the following expression represent the criterion of spontanei...

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  5. Which relations among the following is/are correct ?

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  6. Which statements among the following is /are incorrect ?

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  7. Second law of thermodynamics points out that

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  8. which among the following is intensive quantity ?

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  9. The following is(are) endothermic reaction (s):

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  10. Among the following, the intensive property is (properties are) :

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  11. In a flask, colourless N(2)O(4) is in equilibrium with brown-coloured ...

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  12. The gas with the highest heat of combustion is :

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  13. Given NH(3)(g)+3Cl(2)(g)toNCl(3)(g)+3HCl(g)+x(1) N(2)(g)+3H(2)(g)t...

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  14. A scientist needs a refrigeration machine to maintain temperature of -...

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  15. Under the same conditions, how many mL of 1M KOH and 0.5M H(2)SO(4)sol...

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  16. The standard molar heats of formation of ethane, carbon dioxide, and l...

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  17. The enthalpy of combustion of H(2) , cyclohexene (C(6)H(10)) and cyclo...

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  18. Which of the following is an endothermic reaction?

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  19. The heat released when NH(4)OH and HCl neutralise is

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  20. The difference between the heats of reaction at constant pressure and ...

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