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The heats of formation of CO2, H2O and C...

The heats of formation of `CO_2, H_2O` and `C_2H_4` are `-94.05, -68.2 and 12.6` K.Cals/ mole, respectively. The heat of combustion of ethylene is

A

337 K.Cal

B

212.8 K.Cal

C

`-372` K.Cal

D

`-337` K.Cal

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The correct Answer is:
D
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AAKASH SERIES-CHEMICAL THERMODYNAMICS-PRACTICE EXERCISE
  1. If (I)C + O2 rarr CO2 , Q1 (II) C+1//2 O2 rarr CO , Q2 (III) CO + ...

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  2. The enthalpy of formation of N2O((g)) and NO((g)) are 82.0 KJ and 90 K...

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  3. The heats of formation of CO2, H2O and C2H4 are -94.05, -68.2 and 12.6...

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  4. Given that C + O2 rarr CO(2) , DeltaH^@ = -xkJ 2CO + O2 rarr 2CO2 , ...

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  5. The enthalpy of formation of ammonia is -46.0 KJ mol^(-1). The enthalp...

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  6. Which of the following bond has highest enthalpy

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  7. 2C((s))  + 1/2O(2(gg) rarr CO(2(g)) , DeltaH = -787 KJ H(2(g)) + 1/2...

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  8. Heats of combustion of C2H4, H2 and C2H6 are -1409 K.J, -285 K.J and -...

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  9. The enthalpy of combustion of cyclohexane cyclohexene and H2 are respe...

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  10. Given that CH3CHO + 5/2O2 rarr 2CO2 + 2H2O, DeltaH = -1168 KJ//"mole...

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  11. The enthalpy of vapourisation of a liquid is 30 KJ mol^(-1) and entrop...

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  12. H(2(g)) rarr 2H((g)) , DeltaH = 400 KJ , then DeltaS("system") at 2000...

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  13. Show that A ∪ B = A ∩ B implies A = B

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  14. Standard molar entropies of Mg((s)) , C((s)), MgO((s)) & CO((g)) respe...

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  15. DeltaH and DeltaS for certain reaction are -10KJ and - 44J/K, DeltaG^@...

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  16. S^@ of N2, H2 and NH3 respectively are 190, 130 & 111 J/K/mol, then D...

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  17. Kp for the reaction 3/2O(2(g)) overset(rarr)(larr)O(3(g)) at 25^@C is ...

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  18. Zn((s)) + Cu((aq))^(+2) -> Cu((s)) + Zn((aq))^(+2), DeltaG = -XKJ, C...

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  19. For a process change in enthalpy is 36 kJ.mol and change in entropy is...

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  20. For which of the following cases DeltaS = (DeltaH)/T

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