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In an endothermic reaction, the value of...

In an endothermic reaction, the value of `DeltaH` is

A

Zero

B

Positive

C

Negative

D

Constant

Text Solution

Verified by Experts

The correct Answer is:
B
For exothermic reactions
`sumH_("Products") gt sum H_("Reactants")`
Hence, `(sumH_("Products")-sumH_("Reactants"))` is positive.
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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  9. The difference between Delta H and Delta U for the combustion of metha...

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  10. The heat of neutralisation is maximum when

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  11. According to the second law of thermodynamics, a process (reaction) is...

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  12. The law of thermodynamics that provides the basis for the determinatio...

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  14. In order to decompose 9 grams of water 142.5 KJ heat is required. Henc...

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  15. In an adiabatic expansion of an ideal gas -

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  16. The free energy change for a reversible reaction at equilibrium is

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  17. Which of the following conditions regarding the chemical process ensur...

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  18. If for a given substance, melting point is T(B) and freezing point is ...

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