why spontaneous process are mostly exothermic and irreversible?
Answers
Answer:
Why are almost all spontaneous reactions exothermic? ... Because atoms or molecules react for the sole purpose of being energetically stable and this happens when they get into an arrangement that lets them have a reduced free energy which is what happens when an exothermic reaction takes.
Answer:
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.
For example, when the partition is removed in the cylinder-and-piston arrangement below (a), the gas expands spontaneously to fill the evacuated space (b). Since the gas is expanding into a vacuum, it does no work on the surroundings (w = 0).
Explanation:
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