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Which one of the following is an exother...

Which one of the following is an exothermic reaction?

A

`CaCO_(3)(s)rarr CaO(s)+CO_(2)(g)`

B

`N_(2)(g)+O_(2)(g)rarr 2NO(g)`

C

`2HgO(s)rarr 2Hg(s)+O_(2)(g)`

D

None of these

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The correct Answer is:
D
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ALLEN-THERMODYNAMICS -EXERCISE -3
  1. Which of the following is an endothermic reaction?

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  2. Which of the following reaction is endothermic ?

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  3. Which one of the following is an exothermic reaction?

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  4. The formation of water from H2(g) and O(2)(g) is an exothermic process...

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  5. Which plot represent an exothermic reaction ?

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  6. Which of the following are applicable for a thermochemical equation ? ...

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  7. The correct thermochemical equation is :

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  8. The enthalpy changes of formation of the gaseous oxides of nitrogen (N...

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  9. In the reaction for the transition of carbon in the diamond form to ca...

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  10. Which plot represent an exothermic reaction ?

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  11. Which of the following value of DeltaH(f)^(@) represent that the produ...

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  12. S (rhombic) + O(2)(g) rightarrow SO(2)(g), Delta H = -297.5 kJ S(mon...

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  13. Heat of formation, Delta H(f)^(@) of an explosive compound like NCl(3)...

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  14. According to the following reaction C(S)+1//2O(2)(g)rarr CO(g), Delta ...

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  15. Which of the following represents an exothermic reaction :-

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  16. The heat change during the reaction 24g C and 128g S following he chan...

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  17. For the reaction ,3O(2)rarr 2O(3),DeltaH=+ve. We can say that :

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  18. From the reaction P(White) rarr P(Red) Delta H =-18.4KJ, it follows th...

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  19. In Kirchoff's equation which factor affects the heat of reaction :

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  20. For the reaction , H(2)(g)+1//2O(2)(g)=H(2)O(l), Delta C(p)=7.63 "cal/...

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