Tue November 29, 2011 By: Aparna Tomar

In a spontaneous reaction delta G is negative which means that energy loses then why the entropy increases?

Expert Reply
Wed November 30, 2011
Yes when the value of  ?G is negative, the energy is releases or exothermic process occur. This released energy causes the increase in entropy. 
A positive ?S denotes an increase in entropy on going from reactants to products, while a negative sign is associated with a decrease in entropy.
We can also define entropy as follows:

Entropy measures the spontaneous dispersal of energy: how much energy is spread out in a process, or how widelyspread out it becomes — at a specific temperature.


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