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Which of the following conditions regard...

Which of the following conditions regarding the chemical process ensures its sponteneity at all temperatures

A

`DeltaH lt0` , `DeltaS lt 0`

B

`DeltaH gt0` , `DeltaS lt 0`

C

`DeltaH lt0` , `DeltaS gt 0`

D

`DeltaH gt0` , `DeltaS gt 0`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaH lt 0` , `DeltaS gt0` are always favourable conditions at all temperatures.
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. In an adiabatic expansion of an ideal gas -

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  2. The free energy change for a reversible reaction at equilibrium is

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  3. Which of the following conditions regarding the chemical process ensur...

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  4. If for a given substance, melting point is T(B) and freezing point is ...

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  5. When 1 mole of gas is heated at constant volume. Temperature is raised...

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  6. Enthalpy of CH(4)+(1)/(2)O(2)rarrCH(3)OH is negative. If enthalpy of...

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  7. The heat required to raise the temperature of a body by 1 K is called

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  8. A heat engine absorbs heat Q(1) at temperature T(1) and Q(2) at temper...

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  9. An endotthermic reaction is non-spontaneous at freezing point of water...

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  10. Compounds with high heat of formation are less stable because

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  11. Which of the following statements is true ?

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  12. The intensive property among these quantities is

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  13. An adiabatic expansion of an Ideal gas always has

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  14. The favourable conditions for a spontaneous reaction are

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  15. In a closed insulated container, a liquid is stirred with a paddle to ...

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  16. C("diamond")toC("Graphite"), DeltaH=-ve. Then shows that

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  17. If a reaction involves only solids and liquid, which of the following ...

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  18. Mechanical work is specially important in systems that contain

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  19. The law formulated by Nernst is

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  20. Heat exchanged in a chemical reaction at constant temperature and pres...

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