Solutions for Chapter 17: Conjugated Pi Systems and Pericyclic Reactions

The compound CH2"C"CH2. Any compound that contains adjacent carbon-carbon double bonds; that is, any molecule that contains a C"C"C functional group.

The position immediately adjacent to a functional group.

A solution in which water is the solvent. (Chapter 4: Introduction)

Electrons. (2.2)

The cycle that relates lattice energies of ionic compounds to ionization energies, electron affinities, heats of sublimation and formation, and bond enthalpies. (9.3)

A representation of a chemical reaction using the chemical formulas of the reactants and products; a balanced chemical equation contains equal numbers of atoms of each element on both sides of the equation. (Section 3.1)

Properties of solutions that depend on the number of solute particles in solution and not on the nature of the solute particles. (12.6)

A polymer,that is formed via a condensation reaction.

In an acid-base reaction, the product that results when a base is protonated.

An acid and its conjugate base or a base and its conjugate acid. (15.1)

A reaction in which the enthalpy of the products is higher than the enthalpy of the reactants; a reaction in which heat is absorbed

A graph showing the changes in energy that occur during a chemical reaction; energy is plotted on the vertical axis, and reaction progress is plotted on the horizontal axis. Also called a reaction coordinate diagram

The magnitude of charge of one mole of electrons: 96,500 C>mol. (Section 20.5)

A simple method for drawing the relative energy levels of the MOs for a ring assembled from continuously overlapping p orbitals.

The absolute temperature scale; the SI unit for temperature is the kelvin. Zero on the Kelvin scale corresponds to -273.15 °C. (Section 1.4)

Refers to groups occupying 1,3-positions on a benzene ring.

A reaction that has a rate equation in which the sum of all exponents is two.

In IR spectroscopy, when two bonds are stretching in phase with each other.

A name that is assigned using the rules of IUPAC nomenclature.

A geometry adopted by an atom with a steric number of 3. All three groups lie in one plane and are separated by 120°.