The _____ of a reaction is not directly affected by temperature. If a reaction has a negative change in _____ then it will be exothermic. An increase of disorder is a form of _____.

CHOICES:
enthalpy
kinetic energy
entropy
free energy

Question

The _____ of a reaction is not directly affected by temperature. If a reaction has a negative change in _____ then it will be exothermic. An increase of disorder is a form of _____. 

CHOICES:
enthalpy
kinetic energy
entropy
free energy

anonymous · Answer

i believe the negative change in FREE ENERGY will be ecothermic, and an increase of disorder is a form of entropy? but im not sure.

anonymous · Answer

You misunderstand the term free energy. Free energy is a measure of overall potential energy. Enthalpy is chemical potential energy.

anonymous · Answer

Decrease in enthalpy results in chemical bonds converting their energy to heat, so negative change in enthalpy results in exothermicity.

anonymous · Answer

Hmm, so then the top one would be kinetic energy?

anonymous · Answer

i guess enthalpy is the correct answer.

anonymous · Answer

The question you were given is poorly worded because the phrasing of  the first sentence implies reference to a given reaction, but "free energy" is the most appropriate  answer for the top one out of the options given, because it's dependant on things other than temperature, but only for differing reactions. You know the expression for free energy, in terms of enthalpy, temperature and entropy?

anonymous · Answer

@cheese3.1416 it cannot be free energy because free energy can be affected by temperature. The rate of free energy increases with the raise in temperature.