Algengar spurningar

Efna3EJ05

Prerequisite: EFNA3LT05

The course is designed to analyse chemical kinetics. Students study rate equations, rate laws, rate constants, temperature dependency of rate constants, the effect of concentration on the rate of chemical reactions, activation energy, reaction mechanisms, elementary steps, and chemical catalysis. Furthermore, students learn about chemical equilibrium: equilibrium state, equilibrium constant, Le Châteliers principle, gases and heterogeneous equilibria, and factors that affect chemical equilibrium. Students acquire knowledge on acids and bases, autoionization of water, the equilibrium constant Kw, strong and weak acids, strong and weak bases, pH, conjugate acid-base pairs, salts of acids and bases. Students also study buffer solutions, acid-base titrations, indicators, solubility, solubility equilibria, solubility product, and the common ion effect. There is also an introduction to spontaneous reactions, entropy, the second law of thermodynamics, the third law of thermodynamics, and Gibbs free energy.

Laboratory component:

1. The effect of concentration on the rate of a reaction. Objectives: Prepare solutions of different molarity and measure the time it takes for a reaction to go to completion. To determine the rate law of the reaction.
2. The determination of an equilibrium constant, KC. Objectives: To use Vernier data collection equipment to obtain colorimetric measurements to determine molarity (Beer‘s law). Determine KC for a reaction using the measured molarity.
3. Acid-base titration. Objectives: To use Vernier data collection equipment to monitor and record pH during two titrations; strong acid vs. strong base and weak acid vs. strong base. To study and compare the pH profiles (pH vs. time).