STUDY GUIDE FOR LAB FINAL

6 December 2006

During your last lecture period you will be given approximately 30 minutes to complete the lab final with the aid of a calculator. It accounts for 21 points of the 135 total possible points in the lab portion of the course. The exam will consist of both multiple choice questions and short answers/calculations.

GENERAL:

proper application/calculation of statistics

(significant figures, mean,)

purpose and use of instruments and glassware

(e.g., balances, volumetric glassware)

FOR EACH EXPERIMENT:

purpose of the experiment

primary chemical reactions involved

observations made indicating chemistry involved

appropriate use of the glassware and equipment

theory behind the experimental technique as covered in the lab manual & the textbook

general equations used for calculations in each experiment

Calibration of Volumetric Glassware	Proper use of volumetric glassware
Gravimetric calcium	Precipitation reactions, stoichiometry calculations for quantitative precipitation reaction, technique for pure precipitation of solids
5 anions	Types of ionic reactions, net ionic equations, strong and weak acids, common oxidizers, complexes and ligands; observations indicating type of reaction
Gas Analysis of Nitrite	Ideal gas law; Dalton’s Law of Partial Pressures; redox reaction used quantitatively; technique to accurately determine gas P, V, &T
Volumetric Acid	Acid-base titrations: -standardizing solutions -determining amount of acid or base in sample -determination of K_a from pH titration curve -use of an indicator and a pH meter
Complexiometric Tiration of Zn & Ca	Complex formation with metal; Properties of EDTA; preparation of buffer at particular pH