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A reaction occurs spontaneously in forwa...

A reaction occurs spontaneously in forward direction if

A

`T Delta S gt Delta H` where `Delta H` is positive and `Delta S` is negative.

B

`T Delta S = Delta H` where both `Delta H and Delta S` are positive

C

`T Delta S lt Delta H` where both `Delta H and Delta S` are positive

D

`T Delta S gt Delta H` where both `Delta H and Delta S` are positive

Text Solution

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The correct Answer is:
D
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AAKASH INSTITUTE-THERMODYNAMICS-SECTION-A
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  2. The value of entropy of the universe is always

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  3. A reaction occurs spontaneously in forward direction if

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  4. For an exothermic reaction to be spontaneous (DeltaS = negative)

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  5. The enthalpy change of a reaction does not depand on

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

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  7. In a chemical reaction, Delta H = 150 kJ and Delta S = 100 JK^(-1) at ...

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  8. Pick out the correct option which represents for the work done by the ...

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  9. A gas expands isothermally against a constant external pressure of 1 a...

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  10. The free energy change, DeltaG = 0, when

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  11. If an insulated container containing liquid is stirred with a paddle t...

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  12. The bond energies of H--H , Br--Br and H--Br are 433,, 192 and 364KJmo...

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  13. If one mole of ammonia and one mole of hydrogen chloride are mixed in ...

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  14. In thermodynamics, a process is called reversible when

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  15. X(g) + 2Y(g) rarr 2Z(g) + 3A(g) The change in enthalpy at 27^(@)C is 7...

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  16. In a spontaneous process the system undergoes

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  17. A quantity of an ideal gas at 20^(@)C reversibly expands against a con...

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  18. When the common salt dissolves in water, the entropy of the system inc...

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  19. Pick the extensive property from the given options

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  20. If a process is both endothermic and spontaneous then

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