Best Lewis Structures have all atoms with filled octet and the least charge separation. Iodine can expand
its octet due to empty d-orbitals.
Formal charge = valence electrons bonds # o
Practice Set 1
Express the following numbers in exponential (scientific) notation:
Change the following numbers from exponential notation to decimal (
Practice Set 7
Complete and balance the following equations. Write the corresponding ionic and net ionic equations:
sodium bicarbonate + acetic acid
barium chloride + sodium carbonate
Rules for Assigning Oxidation States
These rules are hierarchical. If any two rules conflict, follow the rule that is higher on the list.
1. The oxidation state of an atom in a free element is 0.
2. The oxidation state of a monoatomic ion is equal to its
Practice Set 6
1. Calculate the mass percent of each element in the following compounds:
a. MgCO3, magnesium carbonate
C6H5OH, phenol, an organic compound used in some cleaners
CoCl2 6H2O, a
1. Which statement concerning Na2CO3 is true?
A) molecule, polyatomic, heteronuclear
B) pure substance, compound, molecule
C) compound, ionic, polyatomic
D) more than one correct response
E) no correct response
2. Which statem
Stereochemistry of the double bond is determined by locating the largest substituent on each carbon of
the double bond. If the largest groups of each carbon are coming off in the same direction, it is Z. If the
largest groups of each carbon
Priority is determined by atomic number, Br = 35, Cl = 17, C = 6, C = 6. Therefore, Br has the highest
Orient the molecule with the methyl facing away from you, the bromine is #1, then you go
Q1 Answer: a On the periodic table, basicity increases as you go up the chart in a group or as you go left
across a period. Carbon is the furthest left across the 2nd period. It is the strongest base and the most
unstable base. This makes it the
8-1 Answer: a
See Section 8.5: Alcohols from Alkenes through OxymercurationDemercuration: Markovnikov Addition
8-2 Answer: f
See Section 8.6: Alcohols from Alkenes through HydroborationOxidation: Anti-Markovnikov Syn
See Section 8.7: H
Structures I and II have polar bonds but no net dipole. Structure II has no polar bonds. Structures III and
V have polar bonds and a net dipole.
Ethyl is an example of an alkyl side chain.
Chapter 6 Study Guide- Substitution and Elimination Reactions of
If a nucleophile only ( Cl-, Br-, I-, HS-, RS-, H2S, RSH, etc.) is used:
Secondary- SN2 + SN1
If a base only is used (like t-BuOK or H-):
Practice Set 8
1. The oxidation state of chromium in K2CrO4 is:
d. none of the above
2. Which of the following reactions does not involve oxidation- reduction?
a. CH4 + O2 H2O + CO2