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Which of the following processes is a no...

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

A

Dissolution of salt of sugar in water

B

Mixing of different gases through diffusion

C

Precipitation of copper when zinc rod is dipped in aqueous solution of copper sulphate

D

Flow of heat from a cold body to a hot body in contact

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The correct Answer is:
D
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NCERT FINGERTIPS-THERMODYNAMICS-Spontaneity
  1. For a reaction: X rarr Y+Z Absolute entropies are X="120 J K"^(-1)"m...

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

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

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

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

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

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

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

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

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

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

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  12. Mathc the following columns and mark the appropriate choice.

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  13. One word answer is given for the following definitions, Mark the one w...

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  14. In a reaction P+Q rarr R+S, there is no change in entropy, Enthalpy ch...

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  15. For reaction, 2K((g))+L((g))rarr2M((g)),DeltaU^(@)=-"10.5 KJ and "Delt...

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  16. Which of the following statements is not correct ?

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  17. DeltaG is the net energy available to do useful work and is a measure ...

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  18. Dissolution of ammonium chloride in water is an endothermic reaction, ...

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  19. What will be the signs of DeltaH and DeltaS when NaOH is dissolved in ...

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  20. At absolute zero, the entropy of a pure crystal is zero. This is

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