Chem 204 Topic Summary uiuc

8/9/2019 Chem 204 Topic Summary uiuc

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Chem 204 Summary of Topics for Final Exam

Note: This list is simply a compilation and summary of topics we covered this semester, use it

as a guide, but not as the only study source, as stated in our course policy, assigned readings,

chapter problems and lecture notes are all game for the final.

Quantum, Light and Energy Describe photoelectric effect, and

Be able to calculate energy, wavelength or frequency of light from the relations, E=h, and c=

Be able to use the Bohr model to assess the energy transitions inside the hydrogen atom

Know how to calculate the uncertainty in the location or speed of a particle

Be able to interpret position/momentum plots

Know the concept of particle-wave duality, and know when and how to use the de Broglie

equation

Understand the particle-in-a-box model and be able to use the model to describe the

energy of an electron

Know the premise of Schrödinger’s equation and what is a wave function Be able to identify graphically a wave function, electron density plot and it’s corresponding orbital

shape(s) (focus on the s,p,d orbitals) (see also http://winter.group.shef.ac.uk/orbitron/ , you’ll need

Firefox to see the electron density plot, as Chrome no long supports java based plugins)

Name and explain the relations of each of the four quantum numbers to the properties and

relative energies of atomic orbital, and the shape of the orbitals

Be able to write the ground state electron configuration (spdf notation as well as the orbital

filling diagram) for an element/ion, and know the exception discussed in lecture

Chemical Bonding, Coordination Compounds and Crystal Field Theory

Understand concept of hybridization and be able to determine the specific hybridizationschemes for the atoms in a molecule

Be able to interpret the hybridization energy diagram and describe the pi and sigma bond

formation in the context of the hybridization model

Understand the concept of molecular orbital theory, and how the different MOs are

constructed via combination of atomic orbitals.

Be able to use MO diagrams and give information about bond order and magnetic properties

Know the properties and characteristics of coordination complex formation (octahedral,

tetrahedral)

Be able to identify and name coordination compounds

Understand structural and geometric isomerism, chirality in the context of coordination

compounds

Be able to explain what crystal field theory is about, and how it is used to describe the color

we observe in coordination compounds.

Know the difference between strong- vs. weak-field ligands, and how they affect energy splitting.

Know the difference between high-spin vs. low spin configurations, and how we can use

these to give us magnetic information about the complexes.

http://winter.group.shef.ac.uk/orbitron/http://winter.group.shef.ac.uk/orbitron/http://winter.group.shef.ac.uk/orbitron/http://winter.group.shef.ac.uk/orbitron/


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IMFs, Solids and Properties of Solutions

Understand the different types of intermolecular forces

Be able to rank boiling points based on relative intermolecular forces

Be able to interpret a phase diagram (know what species is present under given conditions)

Understand how we think about solubility and how intermolecular forces really drive

solubility (like dissolves like) Understand how boiling point elevation and freezing point depression work

Understand how osmotic pressure works (and why) and how we calculate osmotic pressure

Be able to determine the vapor pressure of a system when given the mole fraction and the

pure vapor pressure

Know the three basic unit cells for pure solids

Be able to calculate the density of a unit cell, molar mass, and determine identity of an unknown

metal

Understand the properties and characteristics of molecular solids (focus on the metalloids

that have semiconductive properties).

Acid/Bases and Aqueous Equilibria

Know how to use ICE tables to solve equilibrium problems

Understand the definitions of Ka, Kb, and Kw and their respective equations

Be able to calculate the pH of a weak acid/weak base solution

Be able to calculate the pH of a mixture of weak acids/electrolytes/weak bases solution

Be able to predict relative acidity based on molecular structure

Understand how buffered systems work and

Be able to calculate the pH of a buffer solution

Know how to calculate the pH changes when acid or base is added to a buffer solution

Be able to work through a polyprotic titrations where you can determine the pH at halfwaypoints, equiv points, and any point in between

Be able to determine the major species at any point in a titration

Know how to calculate molar solubility using Ksp, and how common ion effect influence

solubility.

Be able to use a Ksp to determine how much of a reagent is needed to cause a precipitate to

form

Understand complex-ion formation and the use Kf in equilibrium calculations


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Electrochemistry

Know how to balance redox equation in acidic and basic solutions

Be able to assess whether a specie is a good/poor oxidizing agent/reducing agent.

Be able to identify which half reaction is cathode or anode in a galvanic or electrolytic cell

Be able to determine the standard potential for a cell

Know how to use the Nernst Equation to determine the nonstandard potential for a cell

Understand how the mass of the anode electrode and cathode electrode change over time

in a galvanic cell

Be able to determine how much material will be plated in an electrolytic cell

Be able to determine how long a cell will be able to run given a specific set of experimental

conditions (and vice versa)

Understand, qualitatively and quantitatively how the potential of a cell changes as we

change the concentration of species in the reaction

Be able to “construct” a concentration cell and be able to determine the potential as the

cell moves towards equilibrium

Know the stoichiometric calculations involved in electrochemical cells/reactions Understand the concepts discussed in lecture on batteries, and corrosion prevention

Introduction to Organic Chemistry

Know the basic naming rules for alkanes and it’s common substituents

Know and be able to identify the functional groups when given the structure

Be able to identify geometric isomerism (i.e. cis/trans configuration) in alkenes and cycloalkanes

Know how to draw a Newman project, and be able to assess the stability of different

conformations for a given molecule.

Be able to determine if a molecule has a stereocenter, and to determine whether if a stereocenterhas a R or S configuration

Understand resonance structures and arrow pushing formalism in organic reactions

Be familiar with nucleophilic substitution reactions, and the species involved (i.e. what makes

good/poor nucleophile, leaving group, etc.)

Be able to determine if a reaction will go through an SN1 or SN2 reaction

Understand the mechanism of SN1 and SN2

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Chem 204 Topic Summary uiuc