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A process is spantaneous at a given temp...

A process is spantaneous at a given temperature if

A

`DeltaH=0`, `DeltaS lt 0`

B

`DeltaHgt0`, `DeltaS lt 0`

C

`DeltaHlt0`, `DeltaS gt 0`

D

`DeltaHgt0`, `DeltaS = 0`

Text Solution

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The correct Answer is:
C
`(A)` Energy has no rule, entropy decreases non spontaneous
`(B)` Energy factor opposes, entropy factor also opposes- non spontaneous
`(C )` Energy factor favours, entropy factor also opposes-spontaneous
`(D)` Energy factor opposes, entropy factor has no role- non spontaneous
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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  3. A process is spantaneous at a given temperature if

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  4. Enthalpy is equal to

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  5. Which one of the following sets of units represents the smallest and t...

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  6. If K lt 1 then the value of Delta G^(@) will be

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  7. During isothermal expansion of an ideal gas, its:

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  8. For a reaction A+2BtoC+D, if DeltaH=-25kcal, T=300 K and DeltaS=90 cal...

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  9. Delta G^(@) for a reaction is 46.06 kcal mol^(-). K(P) for the reactio...

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  10. For an ideal gas expanding adiabatically in vacuum,

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  11. How many calories are required to heat 40 g of argon from 40^(@)C to 1...

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

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  13. If an endothermic reaction occurs spontaneously at constant T and P, t...

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  14. 4.48 L of an ideal gas at STP requires 12 cal to raise its temperature...

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  15. Change in internal energy when 4 kJ of work is done on the system and ...

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