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Calculate the entropy of Br(2)(g) in the...

Calculate the entropy of `Br_(2)(g)` in the reaction `H_(2)(g)+Br_(2)(g)rarr2HBr(g), Delta S^(@)=20.1 JK^(-1)` given, entropy of `H_(2)` and HBr is 130.6 and 198.5 J `mol^(-1)K^(-1)` :-

A

`246.3 JK^(-1)`

B

`123.15 JK^(-1)`

C

`24.63 JK^(-1)`

D

`20 KJK^(-1)`

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The correct Answer is:
A
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Use the bond enthalpies listed below to estimate the enthalpy change for the reaction H_(2)(g)+Br_(2)(g)rarr2HBr(g) Given: BE of H_(2), Br_(2) , and HBr is 435, 192 , and 368 kJ mol^(-1) , respectively.

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ALLEN-THERMODYNAMICS -EXERCISE -2
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  10. The spontaneous nature of a reaction is impossible if :

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  11. At a certain temperature T, the endothermic reaction A rarr B proceeds...

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  12. If Delta H gt 0 and Delta S gt 0, the reaction proceeds spontaneously ...

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  16. For the reaction Ag(2)O(s)rarr 2Ag(s)+1//2O(2)(g) the value of Delta H...

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  17. For hypothetical reversible reaction 1//2A(2)(g) +3//2B(2)(g) rarr A...

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  18. For the precipitation of AgCl by Ag^(+) ions and HCl

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  19. What is the sign of Delta G for the process of ice melting at 283 K ?

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  20. What is the free energy change, 'DeltaG' When 1.0 mole of water at 100...

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