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In endothermic reactions...

In endothermic reactions

A

the heat is given to surroundings

B

`DeltaH=-ve`

C

`DeltaH=+ve`

D

`H_(R) gt H_(P)`

Text Solution

Verified by Experts

The correct Answer is:
C

For endothermic reactions, heat is absorbed.
`DeltaH=+ve` [`:. H_(P) gt H_(R )`]
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The following is not an endothermic reactions:

(a) What do you understned by exothermic and endothermic reactions ? (b) Give one example of an exothermic reaction and one of an endothermic reaction. (c ) Which of the following are endothermic reactions and which are exothermic reactions ? {:((i),"Burning of natural gas",(ii),"Photosynthesis"),((iii),"Electrolysis of water",(iv),"Respiration"),((v),"Decomposition of calcium carbonate",,):}

What do you understand by exothermic and endothermic reactions ? Describe an exothermic reaction.

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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. An endothermic reaction is allowed to take place very rapidly in the a...

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

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  3. In endothermic reactions

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

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

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

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

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  8. The heat of combustion of solid benzoic acid at constant volume is -32...

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

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

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

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  12. The reaction given below BaCI(2)(s) +2H(2)O(l) rarr BaCI(2).2H(2)O,D...

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  13. Enthalpy change of the reaction 2H(g) to H(2)(g) is -104 kcal The ...

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  14. According to latest sign conventions, the correct expression represent...

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  15. 'If a system A is in thermal equilibrium with B and B is in thermal eq...

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  16. According to Hess's law, the thermal effects of a reaction depends on

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  17. Hess's law states,

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  18. Which of the following statements relationship is not correct?

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  19. A hypothetical reaction, A rarr 2B, proceeds via following sequence of...

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  20. N(2)(g) +2O(2)(g) rarr 2NO(2)(g) +X kJ 2NO(g)+O(2)(g) rarr 2NO(2) +Y...

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