Can someone explain to me in detail what you know about the enthalpy, entropy, and free energy changes when a sample of gas condenses to a liquid. How does temperature affect these changes? I do not understand any of these things

Question

dtan5457 · Answer

When a gas condenses to a liquid, it is an exothermic reaction, as it must release heat for the gas to cool down to a liquid.

When it's exothermic, it's enthalpy will always be negative, it's entropy (disorder) is also positive, how high would depend on a lot of factors, but there is a phase change (gas to liquid) which increases disorder...and free energy would likely be negative as well...making this spontaneous.

anonymous · Answer

thank you so much!!!

dtan5457 · Answer

Notice how I basically just explained the numerical value of the topics, lol. If you didn't learn them yet, I suggest reading about them, I did a whole chapter on this. 

your welcome, though :)

feel free to fan and ask more questions.

aaronq · Answer

the transition from gas to liquid is entropically unfavourable , $\Delta S<0$.

The degrees of freedom are greater for a gas molecule than for a liquid molecule. Liquids are more ordered than gases.

anonymous · Answer

Enthalpy is the amount of heat content used or released in a system at constant pressure.
entropy is disorder
free energy, the energy in a physical system that can be converted to do work