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The total entropy change (DeltaS("total"...

The total entropy change `(DeltaS_("total"))` for the system and surrounding of a spontaneous process is given by

A

`DeltaS_("total")=DeltaS_("system")+DeltaS_("surr")gt0`

B

`DeltaS_("total")=DeltaS_("system")+DeltaS_("surr")lt0`

C

`DeltaS_("system")=DeltaS_("total")+DeltaS_("surr") gt 0`

D

`DeltaS_("surr")=DeltaS_("total")+DeltaS_("system")lt0`

Text Solution

Verified by Experts

The correct Answer is:
A
For a spontaneous process, total change in entropy (system + surrounging) should be positive.
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NCERT FINGERTIPS-THERMODYNAMICS-Spontaneity
  1. Study the given graph and choose the correct option.

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  2. In endothermic reactions,

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  3. The total entropy change (DeltaS("total")) for the system and surround...

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  4. Which of the following expressions regarding entropy is not correct?

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  5. For a reaction, P+Q rarr R+S. The value of DeltaH^(@) is -"30 kJ mol"^...

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  6. Which of the following reactions will have the value of DeltaS with a ...

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  7. A reaction is at equilibrium at 100^(@)C and the enthalpy change for t...

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  8. Enthalpy change for the process, H(2)O"(ice")hArr H(2)O"(water)" i...

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  9. At what temperature liquid water will be in equilibrium with water vap...

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  10. For a reaction: X rarr Y+Z Absolute entropies are X="120 J K"^(-1)"m...

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  11. What will be the melting point of KCl if enthalpy change for the reac...

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  12. For reversible reaction : X((g))+3Y((g))hArr 2Z((g)), DeltaH=-"40 kJ" ...

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  13. At 373 K, steam and water are in equilibrium and DeltaH=40.98" kJ mol"...

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  14. Match the column I with column II and mark the appropriate choice.

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  15. Read the following statements regarding spontaneity of a process and m...

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  16. Which of the following processes is a non-spontaneous process?

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  17. Which of the following statements regarding Gibb's energy change is co...

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  18. For a reaction to be spontaneous at any temperature, the conditions ar...

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  19. For the reaction given below the value of standard Gibbs free energy o...

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  20. What is the entropy change when 1 mole oxygen gas expands isothermally...

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