Question

Difference between spontaneous and non spontaneous reactions?

Answer 1

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Spontaneous and nonspontaneous reactions are the two types of chemical reactions that can occur in the environment. Spontaneous reactions take place on their own under a given set of conditions. However, energy should be provided for the nonspontaneous reactions to proceed. The change in the Gibbs free energy is negative for spontaneous reactions. Therefore, these reactions release energy to the surroundings in the form of heat. In nonspontaneous reactions, the change in the Gibbs free energy is positive. They absorb energy from the environment. On that account, spontaneous reactions are exergonic while nonspontaneous reactions are endergonic. The main difference between spontaneous and nonspontaneous reactions is that spontaneous reactions release free energy from the system, making it more stable whereas nonspontaneous reactions increase the total energy of the system.
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Answer 2

The main differences between spontaneous and nonspontaneous reactions are as follows.

• Spontaneous Reactions: This reaction does not require any input energy or source for the process to happen.
• The product's energy is less than that of the reactant's energy which is taking part in the reaction process.
• These reactions belong to the category of "Exergonic reactions".
• The speed of occurrence is fast.
• Nonspontaneous Reaction: For the processing of this type of reaction it required energy as input.
• Here, the energy of the created product is greater than that of the reactants.
• "Endergonic Reactions" is the group to which this reaction belongs.
• Slowly happening process is the nonspontaneous reaction.

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