Chem 11106 Stuff to Know for Exam 1
Three phases and their characteristics
Energy changes associated with DT in same phase (heat capacity) and DT upon phase change (heat of vaporization/fusion/sublimation)
Requirements for vaporization, qualitative picture of how that happens
Requirements for boiling, qual picture of how that happens
Effect of external P on BP
Interparticle forces (ionic, dipole-dipole, H-bonding, dispersion) – know when each is operative and know trends
Why are H-bonds so strong?
What so strange about water?
Know your way around a phase diagram
Like dissolves like and polarity
Intermolecular forces important in solvation (be familiar with qualitative pictures)
Soaps/micelles
unsaturated, saturated, supersaturated
Henry’s Law – qualitative picture of how it works and calculations based on this law
Molarity, molality, mole fraction, %solutions
Colligative properties in general
VPL – Raoult’s law, calculations and qualitative picture
BPE – qualitative picture, and calculations
FPD - qualitative picture, and calculations
Osmosis - qualitative picture, and calculations
Ionic vs. nonionic species in issues of colligative nature
Chp. 15
Alkane, structure, polarity, relative BP’s, chemical reactivity
Amine, structure, polarity, relative BP’s, chemical reactivity
Carboxylic acid, structure, polarity, relative BP’s, chemical reactivity
Alcohol, structure, polarity, relative BP’s, chemical reactivity
Equilibrium – definition
Kp vs. Kc – going from chemical equation to equilibrium expression
Determination of K values from experimental data
Determination of concentrations from other equilibrium concentration and K value
Use of Q (calculation and interpretation)
*Determination of equilibrium concentrations from nonequilibrium conditions for gaseous systems
*When do you have to use quadratic formula, when can you simplify?
*LeChatelier’s principle – definition, changing amount of reactants/products, changing container volume/pressure, and changing temp
*Wednesday we'll discuss which of the asterisked topics will be on Exam 1 and which on Exam 2.
Study hard over multiple days for best results, problems and concepts. CHEM - IS - TRY ! Be happy to talk to you one on one or in group situations. Exam will consist of multiple choice questions (about 1/3), with the remainder being problems and some short answer questions. Make sure you know the discussed mathematical relationships (I’ll provide quadratic formula if needed). I will, of course, supply any needed constants. Approximate point distribution as follows:
Chp. 12 30 points
Chp. 13 35 points
Chp. 15 5 points
Chp. 17 30 points
McDonald test policies: Sit every other seat, raise your hand if a question arises., do not leave the room until you’ve completed your exam, no programmable calculators. Test will start at 11:25 Friday. Arrive with calculator and empty bladder!