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The enthalpy change (Delta H) for the re...

The enthalpy change `(Delta H)` for the reaction
`N_(2) (g)+3H_(2)(g) rarr 2NH_(3)(g)`
is `-92.38 kJ` at `298 K`. What is `Delta U` at `298 K`?

A

`-92.38 kJ`

B

`-87.42 kJ`

C

`-97.34 kJ`

D

`-89.9 kJ`

Text Solution

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The correct Answer is:
B
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ALLEN-THERMODYNAMICS -EXERCISE -1A
  1. For a phase change: H(2)O(l)hArrH(2)O(s) 0^(@)C, 1 bar

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  2. For a spontaneous process the correct statement is -

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  3. The enthalpy change (Delta H) for the reaction N(2) (g)+3H(2)(g) rar...

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  4. Consider the following reactions : (a) H((aq))^(+)+OH((aq))^(-)=H(2...

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  5. Given the bond energies of H - H and Cl - Cl are 430 kJ mol^(-1) and 2...

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  6. Bond dissociation enthalpy of H(2) , Cl(2) and HCl are 434, 242 and 43...

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  7. For the gas phase reaction PCl(5)rarrPCl(3)(g)+Cl(2)(g) which of t...

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  8. Which of the following are not state functions? (I) q+w (II)q (I...

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  9. From the following bond energies: H--H bond energy: 431.37KJmol^(-1) ...

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  10. The values of Delta H and Delta S for the reaction are 170 kJ and 17...

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  11. For vaporization of water at 1 atmospheric pressure the values of Delt...

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  12. Three moles of an ideal gas expanded spontaneously into vacuum. The wo...

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  13. The following teo reaction are known : Fe(2)O(3)(s)+3CO(g)rarr2Fe(s)...

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  14. Standard entropy of X(2) , Y(2) and XY(3) are 60, 40 and 50JK^(-1)mol...

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  15. Intensive property is :-

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  16. In which of following there is decrease in entropy :-

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  17. Which of the following is not a state function :-

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  18. If the enthaply change for the transition of liquid water to steam is...

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  19. Enthalpy change for the reaction, 4H((g))rarr 2H(2(g)) is -869.6 kJ ...

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  20. Which of the following is the correct option for the free expansion of...

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