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When two equal sized pieces of the same ...

When two equal sized pieces of the same metal at different temperatures `T_(h)` (hot piece) and `T_(c)` (cold piece) are brought into contact into thermal contact and isolate from it’s surrounding. The total change in entropy of system is given by

A

`C"ln"(T_(c)+T_(h))/(2T_(c))`

B

`C"ln"T_(2)/T_(1)`

C

`C"ln"((T_(c)+T_(h))^(2))/(2T_(h)*T_(c))`

D

`C"ln"((T_(c)+T_(h))^(2))/(4T_(h)*T_(c))`

Text Solution

Verified by Experts

The correct Answer is:
D
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MOTION-THERMODYNAMICS-EXERCISE - 2 (LEVEL-I)
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  6. A gas (C("v,m")=5/2R) behaving ideally was allowed to expand reversibl...

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  7. When two equal sized pieces of the same metal at different temperature...

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  10. The entropy change when two moles of ideal monoatomic gas is heated fr...

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  11. The change in entropy of 2 moles of an ideal gas upon iosthermal expan...

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  12. Pressure of 10 moles of an ideal gas is changed from 2 atm to 1 at aga...

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  13. If DeltaH("vaporisation") of substance X (l) (molar mass : 30 g/mol) i...

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  14. A reversible heat engine A (based on carnot cycle) absorbs heat from a...

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  15. An insulated container of gas has two chambers separated by an insulat...

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  16. For the reaction at 300 K A(g)+B(g)toC(g)" Delta"E=-3.0"kcal",DeltaS...

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  17. What is the free energy change (DeltaG) when 1.0 mole of water at 100^...

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  18. What if the free energy change (DeltaG) when 1.0 mole of water at 100^...

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  19. The enthalpy of tetramerization of X in gas phase (4X(g)toX(4)(g)) is ...

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  20. Standard entropy of X(2),Y(2)andXY(3) are 60, 40 and 50 JK^(-1)mol^(-1...

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