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The formation of water from H(2)(g) and ...

The formation of water from `H_(2)(g)` and `O_(2)(g)` is an exothermic process because :

A

`H_(2)(g)` and `O_(2)(g)` have a higher chemical energy than water

B

`H_(2)(g)` and `O_(2)(g)` have a lower chemical energy than water

C

`H_(2)(g)` and `O_(2)(g)` have a higher temperature than water

D

Energy consideration do no arise.

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaH=-ve`, `'. H_(R )-H_(P)`
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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  4. In a change from state A to state B

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  5. According to the diagram given below, the value of DeltaH for conversa...

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  6. When ammonium chloride is dissolved in water, the solution becomes col...

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  7. The enthalpies of formation of all the elements in their standard stat...

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  8. A monoatomic neon molecule possesses

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  10. An endothermic reaction is allowed to take place very rapidly in the a...

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  11. The heat absorbed in a reaction at constant temperature and constant v...

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  12. In endothermic reactions

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  13. For the reaction, 2NH(3)(g)toN(2)(g)+3H(2)(g), which of the followin...

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  14. The heat of reaction at constant volume (DeltaE) and that at constant ...

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  15. Under which of the following condition is the relation DeltaH = DeltaU...

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  16. For the gaseous reaction: N(2)O(4) rarr 2NO(2)

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  18. For hypothetical reaction A(g) + B(g) to C(g) + D(g) Which of the ...

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  19. DeltaE^(@) of combustion of isobutylene is -X kJ mol^(-1). The value o...

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  20. The difference between DeltaH and Delta E at constant voluem is equal ...

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