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Enthalpy of formation of two compounds x...

Enthalpy of formation of two compounds x and y are `-84`kJ and `-156`kJ respectively. Which of the following statement is CORRECT?

A

x is more stable than y.

B

x is less stable than y.

C

Both x and y are stable.

D

x and y are endothermic compounds.

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The correct Answer is:
B
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TARGET PUBLICATION-CHEMICAL THERMODYNAMICS AND ENERGETICS -COMPETITIVE THINKING
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  2. Which among the following thermochemical equations represents formatio...

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  3. Enthalpy of formation of two compounds x and y are -84kJ and -156kJ re...

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  4. Heats of formation of ethane, ethylene, acetylene and CO2 "are" -136.9...

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  5. Heat of formation of water is -272kJ. How much water can be decomposed...

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  8. If the standard molar enthalpy of formation of CaO((s)), CO(2(g)) "and...

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  9. The amount of heat liberated in the reaction 2PCl5 to 2P + 5Cl2 "is" -...

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  10. If heat of combustion of methane is -800kJ, then heat of combustion of...

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  11. When 4g of iron is burnt to ferric oxide at constant pressure, 29.28KJ...

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

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  13. The heat of combustion of carbon to CO(2)is-395.5kJ//mol.The heat rele...

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  14. H(2(g)) + 1/2 O(2(g)) to H2 O((l)) , Delta H =- 68kcal Amount of hea...

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  15. For which one of the following equations is Delta(r) H^(@) equal to De...

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  17. Identify the invalid equation

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  18. The H-H bond energy is 430KJmol^(-1) and Cl-Cl bond energy is 240KJmol...

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  19. Deltaf H of HCl is .

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  20. The bond energies of C-C,C=C, H-H and C-H bonds are 350 kJ mol^-1, 600...

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