BENG 130 Lecture 5: Lecture 05
Document Summary
Entropy and spontaneity: spontaneous vs. nonspontaneous. Spontaneous: change in entropy is positive (so increase in entropy) Nonspontaneous: change in entropy is negative (so decrease in entropy: a system can possibly undergo nonspontaneous reactions, but the system plus environment must undergo an increase in entropy. Adiabatic expansion, then isothermal expansion, then adiabatic. Compression, then isothermal compression (then repeat: ideal gas reversible isothermal expansion/compression. Liquid to gas (evaporation/boiling: isochoric expansion/compression. If (cid:1842) (cid:1842)(cid:3032)(cid:3051)(cid:3047)>(cid:882), then (cid:1848)>(cid:882) (because internal pressure is higher. If (cid:1842) (cid:1842)(cid:3032)(cid:3051)(cid:3047)
