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At 1000K water vapour at 1 atm. Has been...

At 1000K water vapour at 1 atm. Has been found to be dissociated into `H_(2) and O_(2)` to the extent of `3 xx 10^(-5)` %. Calculate the free energy decrease of the system, assuming ideal behaviour.

A

`-DG= 90,060` cal

B

`-DG`=20cal

C

`-DG= 480` cal

D

`-DG= -45760` cal

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The correct Answer is:
D
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AAKASH SERIES-CHEMICAL THERMODYNAMICS-Practice Sheet- Exercise-III
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  2. Which correctly represents the entropy (s) of an isolated system durin...

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  3. At 1000K water vapour at 1 atm. Has been found to be dissociated into ...

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  4. For which process will DH^(@) and DG^(@) be expected to be most simila...

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  5. Statement-I: At low temperature, DH is the dominant factor for spontan...

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  6. For which process will DH^(@) and DG^(@) be expected to be most simila...

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  7. Pick out the correct statement from among the four:

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  8. For a reaction, A(2) + B(2) hArr 2AB, DeltaG and DeltaS values are 20 ...

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  9. Statement-I Due to adiabatic free expansion, temperature of a real gas...

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  10. Which of the following process has negative value of DeltaS?

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  11. Some statements are given with regard to entropy. The incorrect statem...

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  12. 2H(2(g)) + O(2(g)) rarr 2H(2)O((l)) , DeltaH= -ve and DeltaG= -ve. The...

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  13. Based on the third law of themodynamics, the entropy can be obtained u...

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  14. When charcoal burns in air signs of DeltaH and DeltaS "are " 2C((s)) +...

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  15. DeltaS("surr") " for " H(2) + 1//2O(2) rarr H(2)O, DeltaH -280 kJ at 4...

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  16. The direct conversion of A to B is difficult, hence it is carried out ...

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  17. The incorrect statement according to second law of themodynamics is

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  18. Entropy of a system depends upon

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  19. Which processes involve increase in entropy?

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  20. Which statements are correct as per laws of thermodynamics?

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