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Grade: 12th pass

                        

Explain spontaneous and non-spontaneous processes, giving two examples of each.

23 days ago

Answers : (2)

Adarsh Pal
askIITians Faculty
159 Points
							

A spontaneous processes takes place on its own without the external influence. Once started, a spontaneous processes proceeds on its own, without the continuous external help. For spontaneous processes, the change in Gibbs free energy is negative (ΔG0).
Examples of spontaneous processes:
1) Heat flows from hotter body to a colder body.
2) A solid KCl spontaneously dissolves in water.

A non-spontaneous processes does not takes place on its own. It needs continuous external influence.
Once started, a non-spontaneous processes will stop, when the continuous external force is withdrawn.
For non-spontaneous processes, the change in Gibbs free energy is positive (ΔG>0).
Examples of non-spontaneous processes:
1) Flow of heat from inside of refrigerator to the room. Room is at higher temperature than refrigerator.
2)  Boiling of water.

23 days ago
adilakshmigogada 27
101 Points
							

A spontaneous processes takes place on its own without the external influence. Once started, a spontaneous processes proceeds on its own, without the continuous external help. For spontaneous processes, the change in Gibbs free energy is negative (ΔG0).
Examples of spontaneous processes:
1) Heat flows from hotter body to a colder body.
2) A solid KCl spontaneously dissolves in water.

A non-spontaneous processes does not takes place on its own. It needs continuous external influence.
Once started, a non-spontaneous processes will stop, when the continuous external force is withdrawn.
For non-spontaneous processes, the change in Gibbs free energy is positive (ΔG>0).
Examples of non-spontaneous processes:
1) Flow of heat from inside of refrigerator to the room. Room is at higher temperature than refrigerator

16 days ago
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