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Bond dissociation enthalpy of H(2) , Cl(...

Bond dissociation enthalpy of `H_(2)` , `Cl_(2)` and `HCl` are `434, 242` and `431KJmol^(-1)` respectively. Enthalpy of formation of `HCl` is

A

`-93 kJ mol^(-1)`

B

`245 kJ mol^(-1)`

C

`93 kJ mol^(-1)`

D

`-245 kJ mol^(-1)`

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A
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ALLEN-THERMODYNAMICS -EXERCISE -1A
  1. Consider the following reactions : (a) H((aq))^(+)+OH((aq))^(-)=H(2...

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  2. Given the bond energies of H - H and Cl - Cl are 430 kJ mol^(-1) and 2...

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  3. Bond dissociation enthalpy of H(2) , Cl(2) and HCl are 434, 242 and 43...

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  4. For the gas phase reaction PCl(5)rarrPCl(3)(g)+Cl(2)(g) which of t...

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  5. Which of the following are not state functions? (I) q+w (II)q (I...

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  6. From the following bond energies: H--H bond energy: 431.37KJmol^(-1) ...

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  7. The values of Delta H and Delta S for the reaction are 170 kJ and 17...

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  8. For vaporization of water at 1 atmospheric pressure the values of Delt...

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  9. Three moles of an ideal gas expanded spontaneously into vacuum. The wo...

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  10. The following teo reaction are known : Fe(2)O(3)(s)+3CO(g)rarr2Fe(s)...

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  11. Standard entropy of X(2) , Y(2) and XY(3) are 60, 40 and 50JK^(-1)mol...

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  12. Intensive property is :-

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  13. In which of following there is decrease in entropy :-

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  14. Which of the following is not a state function :-

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  15. If the enthaply change for the transition of liquid water to steam is...

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  16. Enthalpy change for the reaction, 4H((g))rarr 2H(2(g)) is -869.6 kJ ...

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  17. Which of the following is the correct option for the free expansion of...

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  18. Consider the following processes :- {:(,DeltaH(kJ//mol)),((1)/(2)A r...

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  19. The enthalpy of formation of CO(g), CO(2)(g),N(2)O(g) and N(2)O(4)(g) ...

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  20. For adiabatic process which is correct -

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