Chemistry home tutors- Spontaneous and Non spontaneous

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Spontaneous and Non spontaneous reaction

Spontaneous reaction means the reaction which occur by itself or it require just small initiation. Normally all exothermic reaction are spontaneous reaction because they occur itself by releasing energy. For example Adding quicklime in water produce lots of energy and it occur by itself. But also there is some exceptions i.e melting of ice is a spontaneous process but it is a endothermic reaction.
Non-spontaneous process means a reaction which do not occur by itself and it require energy for completion mainly all endothermic process are non spontaneous process. For example- If you driving our car on mountain you have to race your car every time, if you don't race your car your will reverse back. So all decomposition reaction are Non spontaneous.
Driving force- the force responsible for spontaneity. Tendency to acquire minimum energy and tendency to acquire maximum randomness, i.e more disorder more randomness and reaction will be spontaneous.