CHEMISTRY II AND LAB - CHEM 1212K (4 Credit Hours)
Description: Second course in a two-semester sequence covering the fundamental principles and applications of chemistry designed for science majors. Laboratory exercises supplement the lecture material.
Prerequisites:
- CHEM 1211K
- College algebra. Precalculus as a prerequisite or co-requisite is highly recommended.
Course Structure:
Units:
- Intermolecular Forces, Liquids and Solids
- Properties of Solutions
- Chemical Kinetics
- Chemical Equilibrium
- Acid-Base Equilibrium
- Additional Aspects of Aqueous Equilibria
- Chemical Thermodynamics
- Electrochemistry
Laboratories:
- Safety
- Vapor Pressure and the Clausius-Clapeyron Equation
- Freezing Point Depression
- Making Solutions
- Titration
- Back titration
- Fading of Phenolphthalein
- Chemical Equilibrium: Finding a Constant, Kc
- Temperature Effects on Equilibrium Constant
- Oxidation State of Iron
- Qual Scheme Simulation
Course Objectives:
Unit 1: Intermolecular Forces, Liquids and Solids
- Identify types of intermolecular forces, namely, ion-ion, ion-dipole, dipole-dipole, London forces and hydrogen bonds
- Predict the relative magnitudes of melting and boiling points based on intermolecular forces
- Describe properties of liquids such as viscosity and surface tension
- Identify phase changes that interconnect solids, liquids and vapor phases
- Predict relative vapor pressures of liquids based on intermolecular forces
- Construct and interpret phase diagrams
- Identify types of solids based on their structure
- Identify and describe synthetic and natural polymers
Unit 2: Properties of Solutions
- Identify the components of a solution
- Explain why solutes dissolve in solvents
- Calculate the solubility of a solution
- Describe the effects of pressure and temperature on solutions
- Use units of concentrations to describe solutions
- Identify the colligative properties of a solution
- Calculate an unknown molecular weight of a solute using colligative properties;
- Describe a colloidal suspension
Unit 3: Chemical Kinetics
- Define the terms “reaction rates” and “rate laws”
- Identify the parameters that affect reaction rates
- Calculate rates of reactions based on balanced equations
- Determine the order with respect to each reactant, based on experimental data
- Determine the order of a reaction graphically based on variations in concentration as a function of time
- Calculate concentrations as a function of time and determine half-lives
- Rationalize changes in reaction rates as a function of temperature
- Identify practical examples where rate phenomena can be applied, for example, catalytic converters in automobiles, souring of milk, etc.
Unit 4: Chemical Equilibrium
- Write down an equilibrium constant expression
- Predict the abundances of products and reactants using the equilibrium constant
- Solve for an equilibrium constant when given equilibrium concentrations of reactants and products
- Solve for equilibrium concentrations when given the initial concentrations of reactants and equilibrium constant
- Determine the effect of changing reaction conditions such as pressure, volume, concentration, and temperature on a chemical equilibrium
- Explain and give examples of the role of a catalyst in a chemical reaction
Unit 5: Acid-Base Equilibrium
- Identify acids and bases
- Calculate the pH of solutions of weak and strong acids and bases
- Solve for equilibrium concentrations of acids and bases given the initial concentrations of reactants and equilibrium constant
- Calculate Kb from Ka
Unit 6: Additional Aspects of Aqueous Equilibria
- Understand the common ion effect.
- Prepare a buffer solution and calculate the pH.
- Perform calcutions of pH for acid-base titrations.
- Calculate solubility equilibria and predict precipitation.
- Appreciate chemistry behind qualitative analysis scheme.
Unit 7: Chemical Thermodynamics
- Define the term entropy
- Compare qualitatively the entropy of two substances
- State and appropriately apply in problems the first, second and third laws of thermodynamics
- Define the term free energy
- Determine change in enthalpy, entropy and free energy for a chemical reaction using data in thermodynamic tables
- Determine, based on calculations of free energy, if a process is spontaneous
- Determine the equilibrium constant, given the free energy or vice versa
Unit 8: Electrochemistry
- Identify reduction-oxidation (redox) reactions by calculating oxidation numbers
- Balance redox equations by the “half-reaction” method;
- Describe the processes in a galvanic cell
- Use reduction potentials to construct galvanic cells
- Predict spontaneity of reactions based on reduction potentials
- Determine cell potentials under non-standard conditions using the Nernst equation
- Carry out simple calculations on electrolysis
- Describe common batteries
- Describe the process of corrosion in terms of redox reactions
Other Required Materials:
Chemistry laboratory materials (Commonly found household items that may be purchased at local retailer for about $30.).
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