- 22.214.171.124: Write a structural formula for the enol tautomer of cytosine (Table...
- 126.96.36.199: (a) Write a resonance form for guanine in which the six-membered ri...
- 188.8.131.52: Classify caffeine and theobromine according to whether each is a py...
Solutions for Chapter 26.1: Pyrimidines and Purines
Full solutions for Organic Chemistry, | 9th Edition
The electrode at which oxidation occurs. (18.2)
A three-dimensional plot of y2 of a wavefunction. It is a region of space that can accommodate electron density.
Delocalized electrons move freely through “bands” formed by overlapping molecular orbitals. (21.3)
A state of dynamic balance in which the rate of formation of the products of a reaction from the reactants equals the rate of formation of the reactants from the products; at equilibrium the concentrations of the reactants and products remain constant. (Section 4.1;Chapter 15: Introduction)
Chlorofl uorocarbons (CFCs, Freons)
Compounds with one or two carbons, chlorine, and fl uorine, formerly used as refrigerants
The process by which a metal is oxidized by substances in its environment. (Section 20.8)
Dalton’s law of partial pressures
A law stating that the total pressure of a mixture of gases is the sum of the pressures that each gas would exert if it were present alone. (Section 10.6)
A compound containing two hydroxyl groups
Stereoisomers that are nonsuperposable mirror images of each other; refers to a relationship between pairs of objects
An electrophilic aromatic substitution reaction that installs an acyl group on an aromatic ring.
Glass transition temperature (TG)
The temperature at which a polymer undergoes the transition from a hard glass to a rubbery state
Atoms or groups on an atom that give an achiral molecule when one of the groups is replaced by another group. The hydrogens of the CH2 group of propane, for example, are homotopic. Replacing either one of them with deuterium gives 2-deuteropropane, which is achiral. Homotopic groups have identical chemical shifts under all conditions
A bond that results from the force of attraction between two oppositely charged ions.
A monosaccharide containing a ketone group.
Lewis dot structure
The symbol of an element surrounded by a number of dots equal to the number of electrons in the valence shell of the atom
A CH group.
An ionic compound formed by replacing one or more hydrogens of an acid by other cations. (Section 4.3)
standard atmospheric pressure
Defined as 760 torr or, in SI units, 101.325 kPa. (Section 10.2)
The total of (single bonds + lone pairs) for an atom in a compound.
A carbocation in which the positive charge resides on a vinylic carbon atom. This type of carbocation is very unstable and will not readily form in most cases.