Spontaneous processes proceed without any outside assistance. Processes that are spontaneous in one direction are nonspontaneous in the reverse direction. Don’t confuse spontaneous with fast or nonspontaneous with impossible. Energy can be used to make some reactions spontaneous that otherwise would not be.
Reversible process: the system changes so that the system and surroundings can be returned to the original state by exactly reversing the process. This maximizes work done by a system on the surroundings. Irreversible processes cannot be undone by exactly reversing the change to the system or cannot have the process exactly followed in reverse. Also, any spontaneous process is irreversible.
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Негізгі бет Spontaneous Processes | Reversible and Irreversible Processes
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