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In which of the following, Delta U=Delta...

In which of the following, `Delta U=Delta H`?

A

`N_2 O_(4(g)) iff 2NO_(2(g))`

B

`2SO_(2(g))+O_(2(g)) iff 2SO_(3(g))`

C

`H_(2(g))+I_(2(g)) iff 2HI_((g))`

D

`H_(2(g))+1/2 O_(2(g)) iff H_2 O_((l))`

Text Solution

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The correct Answer is:
C
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TARGET PUBLICATION-CHEMICAL THERMODYNAMICS AND ENERGETICS -CRITICAL THINKING
  1. For the gaseous reaction involving the complete combustion of iso-buta...

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  2. A mixture of 2 moles of carbon monoxide and one mole of oxygen in a cl...

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  3. In which of the following, Delta U=Delta H?

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  4. For CaCO(3(s)) iff CaO((s))+CO(2(g)) at 977^@ C, Delta H=176 kJ/mol, t...

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  5. For the reaction C(6)H(12)(l)+9O(2)(g)to6H(2)O(l)+6CO(2)(g) , DeltaH...

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  6. The heat produce during combustion of 7.8 g C6 H6 at constant volume f...

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  7. The heat of combustion of solid benzoic acid at constant volume is -32...

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  8. The mathematical expression for the standard enthalpy of sublimation i...

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  9. In which of the following thermochemical changes DeltaH^@ is always ne...

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  10. For the transition C("(diamond)") rarr C("(graphite)"), DeltaH=-1.5 kJ...

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  11. The enthalpy change when 1 g of water is frozen at 0^@C (Delta(fus) H^...

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  12. Which of the following statements is INCORRECT about Born-Haber cycle?

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  13. When 2mole of C(2)H(6) are completely burnt -3129kJ of heat is liberat...

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  14. The enthalpy of formation of ammonia is -46.0 kJ mol^(-1). The enthalp...

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  15. Values of heats of formation for SiO(2) and MgO are -48.4 and -34.7 kJ...

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  16. In the combustion of 11 g of CO(2(g)), 100 kJ of heat is liberated. He...

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  17. The heat of formations of CO((g)) and CO(2(g)) are -26.4 kcal and -94....

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  18. In the combustion of 2.0 g of methane 25 kcal heat is liberated, heat ...

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  19. The heat evolved in combustion of benzene is given by the following eq...

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  20. Standard enthalpies of formation of O(3),CO(3),NH(3) and HI are 142.2,...

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