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The standard heat of formation of a comp...

The standard heat of formation of a compound is the `:`

A

Change in enthalpy for the production of 1 mole of the compound at STP

B

Change in enthalpy for the formation of 1 mole of the compound form its elements

C

Change in enthalpy for the formation of 1 mole of the compound form its elements at 298 K and 1 atm pressure

D

Change in enthalpy for the formation of 1 mole of the compound form its elements at `25^(@)C` and 760 mm of Hg pressure

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The correct Answer is:
C, D
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MOTION-THERMOCHEMISTRY -Exercise - 2 (Level-II)
  1. The heat of reaction depends upon :

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  2. The enthalpy of formation of UF(g) is 22kcal mol^(-1) and that of U(g)...

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  3. The standard heat of formation of a compound is the :

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  4. The heat of neutralization of a strong acid by a strong base is a cons...

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  5. Which of the following statements is (are) true ?

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  6. The standard heat of formation of U(3)O(8) is -853.5 kcal mol^(-1) and...

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  7. For which of the following substances is the heat of formation in the ...

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  8. Which of the following statements is (are) true ?

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  9. The heat of combustion of ethanol was determined in a bomb calorimeter...

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  10. Heat of reaction is the change in enthalpy or internal energy as repre...

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  11. Heat of reaction is the change in enthalpy or internal energy as repre...

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  12. Heat of reaction is the change in enthalpy or internal energy as repre...

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  13. Heat of reaction is the change in enthalpy or internal energy as repre...

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  14. Heat of reaction is the change in enthalpy or internal energy as repre...

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  15. Heat of neuralisation is amount of heat evolved or absorbed when 1g- e...

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  16. Heat of neuralisation is amount of heat evolved or absorbed when 1g- e...

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  17. Heat of neuralisation is amount of heat evolved or absorbed when 1g- e...

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  18. Hess's law of heat of summation is based on law of conservation of ene...

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  19. Hess's law of heat of summation is based on law of conservation of ene...

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  20. Hess's law of heat of summation is based on law of conservation of ene...

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