Respuesta :
The statement describes that spontaneous reactions "always release free energy."
What is spontaneous reaction?
A spontaneous reaction is one that favors the creation of products under the conditions of the reaction.
As they progress, spontaneous reactions generate free energy. If a reaction both releases heat and raises entropy, it will always be spontaneous (have a negative G), regardless of temperature, which suggests that the enthalpy and entropy changes that occur for the system are the determining elements for spontaneity of a reaction. A reaction's free energy change is a mathematical mixture of the enthalpy and entropy changes.
Because the Gibbs Free energy, not the enthalpy, governs spontaneity, all spontaneous reactions are not exothermic. The rate of a reaction is never connected to its spontaneity. This indicates that a spontaneous reaction can happen rapidly or gradually.
Hence the correct option is "always release free energy".
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