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Why are spontaneous/natural processes ir...

Why are spontaneous/natural processes irreversible?

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The spontaneous or natural processes are irreversible in nature because thermodynamic equilibrium of the system is not maintained in such type of processes.
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CHHAYA PUBLICATION-CHEMICAL THERMODYNAMICS-QUESTION ANSWER ZONE FOR BOARD EXAMINATION (VERY SHORT ANSWER TYPE)
  1. If the value of internal energy for 10 g water at a particular tempera...

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  2. In a process A to B to C to D, the heat absorbed by the system in the...

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  3. Why is infinite time required for the completion of an ideal reversibl...

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  4. In a process, if the heat released by the system and work done on the ...

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  5. If the specific heat capacity and molecular mass ofa gas are c(P) and...

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  6. Given an example of a process which is simulataneously isothermal and ...

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  7. At 25^(@)C the standard reaction enthalpy for the reaction AB(3)(g)to(...

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  8. Mention the standard state of sulphur and iodine at 25^(@)C.

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  9. At 25^(@)C, is the standard reaction enthalpy for the reaction 2H(g) +...

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  10. Assuming experimental conditions are the same, compare (DeltaH-DeltaU)...

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  11. What do you mean by the enthalpy of solidification of water at 0^(@)C ...

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  12. Why are spontaneous/natural processes irreversible?

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  13. Give example of two processes where Delta S is zero.

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  14. In which of the following two processes, the change in entropy of the ...

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  15. What will be the change in entropy in an irreversible cyclic process ?

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  16. Are the given statements correct? (1) if heat is absorbed in a chemica...

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  17. Which of the following will have a greater entropy? (1) 1 mol of H(2...

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  18. For a process, DeltaS(sys)=-15J*K^(-1). For what value of DeltaS("surr...

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  19. Which condition does not satisfy the spontaneity criteria ofa reactio...

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  20. Which of the following conditions favours the spontaneity of a reactio...

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