Organic Chemistry Practice Problems at Michigan State University The following problems are meant to be useful study tools for students involved in most undergraduate organic chemistry courses. The …

Organic Chemistry Practice Problems The problem sets provided here are similar to those found on various kinds of standardized exams, such as GRE, ACS & MCAT. The questions are roughly …

Canonical Structures and Resonance The following Lewis / Kekulé structures A through L are isomeric (molecular formula CN 2 H 2). The first part of this question requires you to locate formal charges …

The left hand C=O structure has much greater total bonding than either charge-separated structure, so it describes this functional group rather well. On the other hand, if two or more canonical forms have …

Nuclear Magnetic Resonance Spectroscopy 1. Background Over the past fifty years nuclear magnetic resonance spectroscopy, commonly referred to as nmr, has become the preeminent technique for …

Heterocyclic Compounds Compounds classified as heterocyclic probably constitute the largest and most varied family of organic compounds. After all, every carbocyclic compound, regardless of structure …

Resonance Structures The chief resonance contributors (canonical forms) for the five compounds and ions are shown below. Other structures can be written, but they will be destabilized by reduced …

The information summarized in the above table is very useful for rationalizing and predicting the course of aromatic substitution reactions, but in practice most chemists find it desirable to understand the …

Quiz Draw the Lewis structure (include resonance and formal charges) for: Sulfurous acid The perchlorate ion

Learn about resonance structures in chemistry, including their significance and how they represent molecules with delocalized electrons.