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The enthalpy change for the reaction 2C(...

The enthalpy change for the reaction `2C("graphite")+3H_(2)(g)rarrC_(2)H_(6)(g)` is called

A

enthalpy of formation

B

enthalpy of combustion

C

enthalpy of hydroenation

D

enthalpy of vaporisation

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The correct Answer is:
A
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The enthalpy change for the reaction H_(2)(g)+C_(2)H_(4)(g)rarr C_(2)H_(6)(g) is ……………… The bond energies are, H - H=103, C-H=99, C-C=80 & C=C=145 "K cal mol"^(-1)

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Using the bond enthalpy data given below, calculate the enthalpy change for the reaction C_(3)H_(4)(g)+H_(2)(g)rarrC_(2)H_(6)(g) {:("Data":,"Bond",,"Bond enthalpy",),(,C-C,,336KJmol^(-1),),(,C=C,,606KJmol^(-1),),(,C-H,,410KJ mol^(-1),),(,H-H,,431KJ mol^(-1),):}

The bond enthalpy of C - C, C = C, H - H and C - H bonds are 350,600,400 and 410 kJ · mol-1 respectively. The enthalpy change for reaction C_(2)H_(4(g)) +H_(2(g)) rarr C_(2)H_(6(g)) is

The enthalpy change for the process C("graphite") rarr C(g) is called

OP TANDON-Chemical Thermodynamics and Thermochemistry-Objective Question Level-A
  1. If DeltaH(f)(X), DeltaH(f)(Y), DeltaH(f)(R ) and DeltaH(f)(S) denote t...

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  2. The enthalpy change for the reaction, C(2)H(4)(g)+3O(2)(g)to2CO(2)(g...

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  3. The enthalpy change for the reaction 2C("graphite")+3H(2)(g)rarrC(2)H(...

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  4. The enthalpy of formation of organic compounds are conveniently determ...

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  5. The enthalpies of formation of organic substances are conveniently det...

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  6. The heat of neutralization of any strong acid and strong base is alway...

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  7. The enthalpy of neutralization of oxalic acid by strong acid is - 25.4...

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  8. The amount of heat liberated when one mole of NH(4)OH reacts with one ...

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  9. Heat of neutralisation for the reaction: NaOH+HCl to NaCl+H(2)O is...

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  10. If H^(+)+OH^(-)rarrH(2)O+13.7Kcal , the heat of neutralisation for com...

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  11. In which of the following neutralization reaction, the heat of neutral...

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  12. "The enthalpy of formation of a compound is equal in magnitude but of ...

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  13. "The change of enthalpy of a chemical reaction is the same whether the...

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  14. From the thermochemical reactions, C(("graphite"))+(1)/(2)O(2)toCO,D...

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  15. Calculate heat of formation of KOH(s) using the following equations ...

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  16. The enthalpies of combustion of C(("graphite")) and C(("diamond")) are...

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  17. The heat of combustion of yellow phoshphorus and red phosphorus are -9...

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  18. What will be the heat of formation of methane, if the heat of combusti...

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  19. Given C(s)+O(2(g))toCO(2(g)),DeltaH=-94.2K cal H(2(g))+½O(2(g))toH(2...

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  20. On combustion carbon forms two oxides CO and CO(2), heat of formation ...

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