5.A Thermochemistry

5.A.1 Thermodynamic system, state function

Thermodynamics is the study of energy and its relationship to macroscopic (i.e. large-scale, non-relating to molecular) properties of chemical systems. Why do I say large-scale? Because thermodynamic functions is based on probabilities, which require a LARGE sample. In statistics, we need large samples, because for example Miley, if I wanted to investigate “how many girls think Jeremy is cute”, I wouldn’t investigate only YOU, because CLEARLY we know you think I am hehe We need a sample, a large sample, which is “representative” of the population. Generally, a sample of sqrt(n) represents a population of n.

More info: http://www.wwnorton.com/college/chemistry/gilbert/tutorials/interface.asp?chapter=chapter_11&folder=state_functions

5.A.2 Endothermic and exothermic reactions

5.A.2.a enthalpy H, standard heats of reaction and formation

5.A.2.b Hess’s law of heat summation

More info: http://www.wwnorton.com/college/chemistry/gilbert/tutorials/interface.asp?chapter=chapter_11&folder=hess_law

5.A.3 Bond dissociation energy as related to heats of formation

5.A.4 Measurement of heat changes (calorimetry), heat capacity, specific heat capacity (specific heat capacity of water = 4.184 J/g·K)

More info: http://www.wwnorton.com/college/chemistry/gilbert/tutorials/interface.asp?chapter=chapter_11&folder=heating_curves

http://www.wwnorton.com/college/chemistry/gilbert/tutorials/interface.asp?chapter=chapter_11&folder=calorimetry

5.A.5 Entropy as a measure of “disorder,” relative entropy for gas, liquid, and crystal states

5.A.6 Free energy G

More info: http://www.wwnorton.com/college/chemistry/gilbert/tutorials/interface.asp?chapter=chapter_13&folder=gibbs

5.A.7 Spontaneous reactions and ΔGº