CH 202 Chemistry for Engineers 2

Lecture Hours: 3
Lab Hours: 3
Credits: 4

Provides the second course of a two-term sequence. Covers, Redox, gas laws, crystal structure, reaction rates, rate laws, reaction mechanisms, acids and bases, chemical equilibrium, spontaneous changes, free energy, voltaic and electrolytic cells, coordination compounds, organic structure, and polymer chemistry.

Prerequisite: CH 201 with a grade of C or better; or consent of instructor.
Recommended: Co-enrollment in CH 212, consult with instructor.

Student Learning Outcomes:

Estimate uncertainties inherent in scientific measurements and calculations and report answers to the correct number of significant figures.
Relate the bonding, structure and reactivity of the main-group elements to their atomic and periodic properties.
Predict the dominate intermolecular forces between molecules and the effects of those forces.
Use crystal structure to determine radii of atoms.
Contrast rates of chemical reactions and their position of equilibrium.
Use the “ICE” scheme to correctly solve equilibrium problems.
Relate pH to the acid equilibrium constant and the extent of dissociation.
Use free energy to determine the direction of chemical changes and how temperature affects spontaneity.
Construct and explore batteries and how they function under nonstandard conditions.
Evaluate electrolytic cells and nonspontaneous reactions.
Relate the structures of organic and inorganic polymers to their monomer structures.
Collect, organize and analyze data and identify key trends and relationships.
Perform experiments safely, make clear observations, summarize data in tables, maintain laboratory notebooks and write clear and concise laboratory reports.

Statewide General Education Outcomes:

Gather, comprehend, and communicate scientific and technical information in order to explore ideas, models, and solutions and generate further questions.
Apply scientific and technical modes of inquiry, individually, and collaboratively, to critically evaluate existing or alternative explanations, solve problems, and make evidence-based decisions in an ethical manner.
Assess the strengths and weaknesses of scientific studies and critically examine the influence of scientific and technical knowledge on human society and the environment.

Content Outline

Models of Chemical Bonding
- Atomic properties and chemical bonds
- Ionic bonding model
- Covalent bonding model
- Bond energy and chemical change
- Electronegativity and bond polarity
Shapes of Molecules
- Depicting molecules and ions with Lewis structures
- Valence Shell Electron Pair Repulsion Theory (VESPR) and molecular shape
- Molecular shape and molecular polarity
Theories of Covalent Bonding
- Valence Bond (VB) Theory and Orbital Hybridization
- Types of covalent bonds
Intermolecular Forces: Liquids, Solids, and Phase Changes
- Overview of physical states and phase changes
- Quantitative aspects of phase changes
- Types of intermolecular forces
- Solid state: structure, properties, and bonding
Kinetics: Rates and Mechanisms of Chemical Reactions
- Factors that influence reaction rate
- Expressing the reaction rate
- The Rate Law and it’s components
- Integrated Rate Laws: concentration changes over time
- Effects of temperature on reaction rate
- Explaining the effects of concentration and temperature
- Reaction mechanisms: steps in the overall process
- Catalysis: Speeding up a Chemical Reaction
Equilibrium: The extent of Chemical Reactions
- Equilibrium states and the equilibrium constant
- Reaction quotients and the equilibrium constant
- Reaction Direction: Comparing Q and K
- Solving equilibrium problems
- Reaction conditions and the equilibrium state: Le Chatelier’s Principle
Acid-Base Equilibria
- Acids and bases
- Autoionization of water and pH scale
- Proton Transfer
- Solving problems involving weak-acid equilibria
- Weak bases and their relation to weak acids
- Acid-base properties of salt solutions
Thermodynamics: Entropy, Free Energy, and Direction of Chemical Reactions
- Second law of thermodynamics: predicting spontaneous changes
- Calculating the change in entropy of a reaction
- Entropy, free energy, and work
- Free energy, equilibrium and reaction direction
Electrochemistry: Chemical Change and Electrical Work
- Redox reactions and electrochemical cells
- Voltaic cells: using spontaneous reactions to generate electrical energy
- Cell potential: output of a voltaic cell
- Free energy and electrical work
- Electrochemical processes in batteries
- Corrosion: environmental electrochemistry
- Electrolytic cells: using electrical energy to drive nonspontaneous reactions
Coordination Compounds
- Coordination numbers
- Geometries
- Ligands
- Equilibria involving complex ions
Organic Compounds and the Atomic Properties of Carbon
- Characteristics of organic molecules
- Structures and classes of hydrocarbons
- Classes or organic reactions
- Monomers/polymers-addition polymers
- Monomers/polymers-condensation polymers