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DeltaH for solid to liquid transitions f...

`DeltaH` for solid to liquid transitions for protein `A` and `B` are `2.73 kcal//mol` and `3.0 kcal//mol` .The two melting points are `0^(@)C` and `30^(@)C` respectively. The entropy changes `DeltaS_(A)` and `DeltaS_(B)` at two transition temperatures are related as

A

`DeltaS_(A)=DeltaS_(B)`

B

`DeltaS_(A)ltDeltaS_(B)`

C

`DeltaS_(B)ltDeltaS_(A)`

D

`DeltaS_(B)(300DeltaS_(A))/(273)`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaS_(A)=(2.73)/(273)=0.01` , `DeltaS_(B)=(3.0)/(303)=0.0099`
Hence `DeltaS_(B) lt DeltaS_(A)`
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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  2. Enthalpy of an exothermic reaction is always

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  3. DeltaH for solid to liquid transitions for protein A and B are 2.73 kc...

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  4. The heat absored at constant volume is equal to the system's change in

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  5. Which of the following holds good to the laws of thermodynamics for th...

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  6. For a melting of a solid at 25^(@)C, the fusion process requires energ...

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  7. The difference between Delta H and Delta U for the combustion of metha...

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  8. The heat of neutralisation is maximum when

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  9. According to the second law of thermodynamics, a process (reaction) is...

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  10. The law of thermodynamics that provides the basis for the determinatio...

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  11. The heat of combustion of graphite and carbon monoxide respectively ar...

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  12. In order to decompose 9 grams of water 142.5 KJ heat is required. Henc...

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  13. In an adiabatic expansion of an ideal gas -

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

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

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

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

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

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

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

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