3. ACID/BASES and INTRODUCTION TO ORGANIC REACTIONS. (approx. lecture time: 1.5 hr)Topics covered: 3.1-3.7, 3.10, 3.12, 3.13.

“Without organic reactions, there wouldn’t be life or much of anything else that is worthwhile”

Simple acid-base reactions

Lewis acid-base reaction

Basic Reaction Types

Basic Bond Cleavages

Will cover in Chapter 10

Bond Formation

Trends in Acidity (pKa)

Trends in Acidity (pKa)

Having more s character means that the electrons of the anion will be closer to the positively charged nucleus and hence lowers the energy (more stable)

Hybridization sp sp2 sp3

% S character 50% 33% 25%

Examples of Reactions

Examples of Reactions

HCl acid/base

heterolyticcleavage

nucleophilic attack

Use of Reaction Arrows in Organic Chemistry