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In which of the following entropy of the...

In which of the following entropy of the system decreases?

A

Crystallization of liquid in to solid

B

Temperature of crystalline solid in increased from 0 K to 115 K

C

`H_(2(g)) rarr 2H_((g))`

D

`2NaHCO_3(s)rarr Na_2CO_3(s)+CO_2(g)+H_2O(g)`

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CHETANA PUBLICATION-Chemical Thermodynamics-EXERCISE
  1. The correct thermodynamic conditions for the spontaneous reaction at a...

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  2. A gas is allowed to expand in a well insulated container against a con...

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  3. In which of the following entropy of the system decreases?

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  4. The enthalpy of formation for all elements in their standard state is

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  5. Which of the following reaction is exothermic ?

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  6. 6.24 g of ethanol are vaporized by supplying 5.89kJ of heat.Enthalpy o...

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  7. If the standard enthalpy of formation of methanol is -238.9 kJ mol^(-1...

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  8. For vaporization of water at 1bar,DeltaH=40.63kJ mol^(-1)and DeltaS = ...

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  9. Bond enthalpies of H-H, Cl-Cl and H-Cl bonds are 434 kj mol^(-1), 242 ...

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  10. Which of the following is not a state function?

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  11. Which of the following is not an extensive property?

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  12. An endothermic reaction is one in which heat content of

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  13. In a chemical reaction, work is done by the system when

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  14. Which of the following is an intensive property?

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  15. When a sample of an ideal gas is allowed to expand at constant tempera...

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  16. A gas of 0.320 kJ works on its surroundings and absorbs 120 J of heat ...

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  17. In the reaction, H2 + Cl2 rarr 2HCl DeltaH =-184 kJ, if 2 moles of H2 ...

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  18. The enthalpies of formation of N2O and NO at 298 K are 82 and 90 kJ mo...

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  19. For which of the following substances DeltafH^@ is not zero.

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  20. If for a reaction, DeltaH is negative and DeltaS is positive then the ...

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