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"The quanity of heat which must be suppl...

"The quanity of heat which must be supplied to decompose a compound into its element is equal to the heat evolved durring the formation of that compound from the element. " This statement is known as

A

Hess's law

B

Joule's law

C

Le-Chatelier's principle

D

Lavoisier and Laplace law

Text Solution

Verified by Experts

The correct Answer is:
B
It is Lavoisier and Laplace law. This is another law of thermochemistry which was put forward before Hess's law.
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A2Z-CHEMICAL THERMODYNAMICS-Section D - Chapter End Test
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  6. If a 298K the bond energies of C-H,C-C,C=C and H-H bonds are respectiv...

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  7. The enthalpies of formation of Al(2)O(3) and Cr(2)O(3) are -1596KJ and...

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  8. "The quanity of heat which must be supplied to decompose a compound in...

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  9. C("graphite")+O(2)(g)rarrCO(2)(g) deltaH=-94.05Kcalmol^(-1) C("dia...

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  10. Which of the follwing has lowest fusion temperature ?

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  12. For conversion C (graphite)rarrC (diamond) the DeltaS is

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  14. For the given heat of reaction, (i) C(s)+O(2)(g)CO(2)(g)+97Kcal (i...

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  15. What is the amount of heat to be supplied to prepare 128g of CaCO(3) b...

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  16. Ionisation energy of A1=5137KJmol^(-1)(DeltaH) hydration of Al^(3+)=-4...

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  17. At 0^(@)C , ice and water are in reuilibrium and DeltaS and DeltaG for...

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  18. Assertion : Molar entropy of vaporization of water is different from e...

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  19. Assertion: The increase in internal energy (DeltaE) for the vaporisati...

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