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Which of the following value of DeltaH(f...

Which of the following value of `DeltaH_(f)^(@)` represent that the product is least stable ?

A

`-94.0kcal" "mol^(-1)`

B

`-231.6kcal" "mol^(-1)`

C

`+21.4kcal" "mol^(-1)`

D

`+64.8kcal" "mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
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OP TANDON-Chemical Thermodynamics and Thermochemistry-Objective Question Level-A
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  3. Which of the following value of DeltaH(f)^(@) represent that the produ...

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  4. The value of DeltaH(O-H) is 109 kcal mol^(-1). Then formation of one m...

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  5. Heat of neutralisation of a strong dibasic acid in dilute solution by ...

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  6. The enthalpy changes at 298 K in successive breaking of O-H bonds of ...

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  7. The combustion of methane is written as CH(4)(g)+2O(2)(g)toCO(2)(g)+...

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  8. A spontaneous change is one in which a system under goes

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  9. In which of the following change entropy decreases?

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  10. For the percipitation reaction of Ag^(o+) ions with NaCI, which of the...

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  11. If the enthalpy of vaporisation of water is 186.5 J mol^(-1), then ent...

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  12. A reaction is non-spontaneous when:

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  13. Standard entropy of X(2) , Y(2) and XY(3) are 60, 40 and 50JK^(-1)mol...

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  14. The unit of entropy is

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  15. Given that Deltah(f)(H)=218 kJ//mol. Express the H-H bond energy in K ...

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  16. For which reaction from the following, DeltaS will be maximum?

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  18. Althought he dissolution of ammonium chloride in water is an endotherm...

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  19. In general, for exothermic reactions to be spontaneous

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