Spring ‘16
Chemistry 163
Unit III
(Please note minor changes from the original schedule on 5/13, 5/18 and 5/20.)
Self-Study before 5/13; Outcomes :
1. To know the terminology of electrochemical cells, including voltaic cell, electrolytic cell, half reaction, oxidation,
reduction, anode, cathode.
2. To review the definitions of oxidation, reduction, redox reactions and how to identify them.
3. To interpret and write half reactions for oxidations and reductions including balance of electrons and charge.
4. To combine half reactions into balanced overall reactions.
5. To use half reactions to identify what gets oxidized, what gets reduced in redox reactions and describe the substances as
reducing agents or oxidizing agents.
6. To use changes in H and O atoms in molecules to identify oxidation and reduction processes.
7. To be able to determine oxidation states for elements, H, O, monatomic ions, and by difference for atoms in molecules
and polyatomic ions containing H and O*.
8. To use oxidation states, when needed, to identify oxidations and reductions in reactions.
9. To preview the construction of wet cells and identify anode and cathode from electrode signs (not in book).
10. To become familiar with cell notation, and how it corresponds to half reactions, and overall reactions.
11. To interpret the standard reduction potential of a half-reaction and relate it to the free energy change.
12. To relate the standard reduction potential (or standard oxidation potential) to the strength of a reducing or oxidizing
agent.
13. To use simple half reactions, or half reactions from a table, to balance redox equations*.
14. To determine standard potentials (cell voltage) for redox reactions from their half-cell potentials and relate them to free
energy change and spontaneity.
*(These outcomes are briefer than the complete section in the text.)
Reading Assignments:
Review Ch. 4 section 4.7 (pp. 152 – 156); read Ch. 19, §19.1 - 19.4 (not pp. 837 – 840);
read the posted PowerPoint notes for 5/13.
Prepared Problems:
None.
Complete Worksheet 12 before class.
5/13 Class and Laboratory: Start in CC1-110 (45 min) then we will move to Biology lab CC1-302 for Experimental Cell
Potentials; lab report due Wednesday, 5/18. Please bring lab notebooks and safety goggles.
Water Quality – Methods Lab Report due. See expectations on p. 78.
Lab notebooks due.
They will be returned 5/16 at the start of lab.
5/16 Laboratory: Water Quality Analyses – II: Field Samples (No Prelab; Report per p. 85, due 5/20)
5/18 Outcomes:
1. To become familiar with the construction and simplified reactions of modern batteries (includes lead-acid battery, not in
text).
2. To relate relative reactivities (the Activity Series) of metals to their standard reduction potentials.
3. To know the principles of how sacrificial anodes and passivation (not in text) minimize corrosion.
4. To review the use of tables of half-reactions to balance oxidation-reduction reactions.*
5. To be able to evaluate cell potentials under non-standard conditions using the Nernst equation.
6. To determine and interpret potentials of concentration cells.
7. To know how concentration cells relate to biological membrane potentials.
8. To understand how pH could be measured with a hydrogen electrode, and how modern pH electrodes function as
concentration cells (not in text).
9. To know that an electrolysis cell does work, and is non-spontaneous, driven by an external voltage source.
10. To be able to convert among amperes, charge, moles of electrons, and moles of reactants and products in electrolysis.
Reading Assignments:
§19.5, 6, 7 (note that we will start Ch. 20 on 5/20)
Prepared Problems:
Ch. 19 chapter-end #7, 13, 21, 25, 27, 37a, 55
Experimental Cell Potentials Lab due
5/20 Outomes:
1. To know key terms of coordination chemistry: coordination complex, ligand, -dentate , chelate, coordination number,
and representative coordination complex geometries.
2. To define and interpret formation constants.
3.
4.
5.
6.
7.
8.
9.
To know specific biological examples of coordination complexes and the specific structural changes when hemoglobin
binds oxygen.
To be able to draw representations of coordination complex geometries.
To write, interpret, and use formulas of coordination complexes.
Given a name, to be able to write the formula of a coordination complex or compound.
To review the relationships among color, wavelength, frequency, and energy levels.
To understand that in coordination complexes, d orbitals have different energies.
Given an energy level diagram, to interpret why transition metal coordination complexes are colored, and why colors and
magnetic properties vary with ligands.
Reading Assignments:
Ch. 18 pp. 809-811 and Ch. 20, §20.1-20.4, 20.6, 7, 8
Prepared Problems:
Ch 19 #57, 69a, 73a, 79 (steel is Fe); Ch 20 #3, 13
Water Quality Analyses Week 2 (Field Samples) report due; see p. 85).
5/23 Laboratory: Water Quality Analyses – III: Field Samples (No Prelab; Report per p. 85 due 5/27)
5/25 Outcomes:
1. To review the definitions of isotopes and isotope notation.
2. To know that isotopes vary in natural abundance, and that some are radioactive.
3. To communicate the difference between chemical stability and nuclear stability.
4. To know definitions and masses, charges, and notations for protons, neutrons, electrons, beta particles, positrons, alpha
particles, and gamma rays.
5. To be able to write nuclear reactions with notations for mass and atomic number.
6. To be able to write specific examples of nuclear decay reactions.
7. Given a decay series, to be able to describe the specific events taking place.
8. To know biological effects of radiation and how radiation damage is quantified.
9. To understand the rates of radioactive decay as first-order kinetic processes.
10. To know how to calculate activity as a function of time and the meaning and implications of half-life.
11. To be able to use decay calculations in radioactive dating.
12. To be able to quantify the relationship between matter and energy and show how the interrelationship applies in nuclear
reactions.
13. To know the definition of, and give an example of fusion reactions.
14. To understand the fundamental differences between fission and fusion reactions.
Reading Assignments:
Ch. 21, §21.1 through 21.5
Prepared Problems:
Ch 20 #3, 13, 19, 23 (Pt is square-planar), 39a, 39c, 43, 47
5/27 Outcomes:
1. To have a qualitative understanding of which nuclei are stable.
2. To know how a nuclear chain reaction is initiated and progresses.
3. To know the schematic of a light-water nuclear reactor, and its implications for nuclear safety.
4. To understand the applications of radiochemistry in tracer analysis, imaging, radioactive therapy, and positron emission
tomography.
5. To have an overview of critical cellular processes emphasizing the role of DNA and proteins (testable in Unit 4).
Reading Assignments:
§21.6, 7, 8; 22.1
Prepared Problems:
Ch. 21 #7, 17, 27, 35, 37
Graded Homework due Ch. 19 #36, 46, 64; Ch. 20 #18, 48 ; Ch. 21 #16, 40
Water Quality Analyses Week 3 (Field Samples) report due; see p. 85).
5/30 Holiday – no classes or laboratories
6/1 Outcomes:
Prepared Problems:
Ch. 21 #49, 57, 67, 71, 75
Group Sheet 3
Success on an hour exam covering the above outcomes and pertinent aspects of lab.
Unit IV comprises topics from Chapter 22, class material on 6/3 and 6/6, with a quiz on 6/6 (location TBD). The remainder
of the lab period on 6/6 will be allocated to presentation preparation.
Water Quality Presentations will be 6/8 – 6/10; see details on Canvas and on the Unit 4 syllabus.