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Given the following entropy values (in J...

Given the following entropy values (in `JK^(-1)"mol"^(-1))` at 298 K atm : `H_(2)(g):130.6.Cl_(2)(g):223.0andHCl(g): 186.7` . The entropy change (in `JK^(-1)"mol"^(-1))` for the reaction
`H_(2)(g)toCl_(2)(g)to2HCl(g)`is

A

540.3

B

727

C

`-166.9`

D

19.8

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Calculate the standard molar entropy change for the formation of gaseous propane (C_(3)H_(8)) at 293K . 3C("graphite") +4H_(2)(g) rarr C_(3)H_(8)(g) Standard molar entropies S_(m)^(Theta) (JK^(-1)mol^(-1)) are: C("graphite") = 5.7, H_(2)(g) = 130.7,C_(3)H_(5)(g) = 270.2

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From the following data at 25^(@)C {:(Reaction ,Delta_(r)H^(o)kJ//mol),((1)/(2)H_(2)(g)+(1)/(2)O_(2)(g)toOH(g),42),(H_(2)(g)+(1)/(2)O_(2)(g)to H_(2)O(g),-242),(H_(2)(g)to 2H(g),436),(O_(2)(g)to2O(g),495):} Which of the following Statement (s) is /are Correct: StatementA: Delta_(r)H^(@) "for the reaction" H_(2)O(g)to2H(g)+O(g)"is 925.5kJ/mol" Statement B: Delta_(r)H^(@) "for the reaction" H_(2)O(g)toH(g)+O(g)"is 423.5kJ/mol" Statement C:Enthalpy of formation of H(g) is-218 kJ/mol Statement D: Enthalpy of formation of OH(g) is 42 kJ/mol

ALLEN-Thermodynamics And Thermo Chemistry-All Questions
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  2. Heat of combustion DeltaH^(@) for C(s),H(2)(g) and CH(4)(g) are 94, -6...

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  4. Which of the following has DeltaS^(@) greater than zero

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  5. The bond dissociation energy of gaseous H(2),Cl(2) and HCl are 104,58 ...

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  6. The internal energy change when a system goes fromk state A to B is 40...

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  7. If a 298K the bond energies of C-H,C-C,C=C and H-H bonds are respectiv...

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  8. The free energy change for the following reactions are given below ...

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  9. The DeltaH(f)^(@) for CO(2)(g), CO(g) and H(2)O(g) are -395.5,-110.5 a...

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  11. Which is intensive property ?

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  12. Which is correct about DeltaG?

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  13. DeltaE=0, for which process :-

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  14. Which of the following statements are true :-

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  15. Which of the following is true for spontaeous process :-

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  16. In which reaction DeltaS is negative :-

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  17. Which of the following value of heat of formation indicates that prod...

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  18. Enthalpy change for reaction 1//2H(2)(g)+1//2Cl(2)(g)toHCl(g) is...

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  19. For the reaction PCl(5)(g)toPCl(3)(g)+Cl(2)(g) where ΔH and ΔE represe...

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  20. In an adiabatic expansion of an ideal gas -

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