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Also know, what makes a process spontaneous?

A spontaneous process is the time-evolution of a system in which it releases free energy and it moves to a lower, more thermodynamically stable energy state. For cases involving an isolated system where no energy is exchanged with the surroundings, spontaneous processes are characterized by an increase in entropy.

Beside above, are all reversible processes spontaneous? Spontaneous processes are irreversible because they can be reversed only by taking a different path to get back to their original state. A reversible process can take the same path to return to its original state. An irreversible process must take a different path to get back to its original state.

In this way, is the process spontaneous or Nonspontaneous?

A spontaneous process occurs without the need for a continual input of energy from some external source, while a nonspontaneous process requires such.

What are examples of spontaneous processes?

A spontaneous process is one that occurs on its own, without any energy input from the outside. For example, a ball will roll down an incline; water will flow downhill; ice will melt into water; radioisotopes will decay; and iron will rust.