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For the combustion of 1 mole of n-octane...

For the combustion of 1 mole of n-octane `C_(8)H_(10(I))` producing carbon dioxide and water vapour at `25^(@)C`

A

`Delta H = Delta U -5.5xx8.314xx0.298" in kJ mol"^(-1)`

B

`Delta H = Delta U +4.5 xx 8.314 xx 0.298" in kJ mol"^(-1)`

C

`Delta H = Delta U+2.5xx8.314 xx 0.298" in kJ mol"^(-1)`

D

`Delta H = Delta U + 5.5 xx8.314 xx0.298" in kJ mol"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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MARVEL PUBLICATION-CHEMICAL THERMODYNAMICS AND ENERGETICS-MULTIPLE CHOICE QUESTIONS (TEST YOUR GRASP)
  1. Heat of reaction at constant pressure is………….. .

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  2. Delta H and Delta U are related as

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  3. For the combustion of 1 mole of n-octane C(8)H(10(I)) producing carbon...

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  4. Regarding the internal energy of the molecule, which of following stat...

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  5. For an adiabatic process

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  6. The enthalpies of combustion of carbon and carbon monoxide are -390 kJ...

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  7. The energy of an isolated system

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  8. Hess's law deals with

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  9. If the door of a refrigerator is kept open, then which of the followin...

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  10. For the following reaction at 298 K H(2(g)) +(1)/(2)O(2(g))=H(2)O((l...

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  11. The enthalpy change for the reaction C(2)H(2(g))+(5)/(2)O(2(g)) rarr...

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  12. An isolated system is that system in which

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  13. The Delta H for combustion of a substance

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  14. Work done in an isothermal process at constant pressure is

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  15. Molar heat capacity is

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  16. In endothermic reaction

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  17. Identify the state function among the following :

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  18. For the reaction C(2)H(4)(g)+3O(2)(g) rarr 2CO(2) (g) +2H(2)O(l), De...

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  19. For the reaction N(2)(g)+3H(2)(g)to2NH(3)(g), which of the following...

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  20. A system, which can exchange mass as well as energy with its surroundi...

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