Why is the change in Gibbs energy negative?
Well, it is not always negative...
If the change in Gibbs free energy,
The majority of reactions studied in laboratories are often spontaneous at room temperature- so it might seem that the majority of reactions has a value for Gibbs free energy which is negative, but this is not necessarily true.
The change in Gibbs free energy is given at constant temperature as:
From this, it can be established that reactions which have a positive
However, reactions with a negative
Other combinations of