1. A Review of General Chemistry

Predict the approximate bond angles for the following:

c. the C—C—N bond angle in CH₃C≡N

d. the C—C—N bond angle in CH₃CH₂NH₂

Circle the coplanar atoms in the following structure:

For each of the following compounds and ions,

1. Draw a Lewis structure.

2. Show the kinds of orbitals that overlap to form each bond.

3. Give approximate bond angles around each atom except hydrogen.

c. CH₂=N–CH₃

You drew the Lewis structures of the following compounds and ion in Assessment 2.32. Predict their shapes around the central atom based on the Lewis structure.

(d) CO₃^2-

Predict the approximate size of the following bond angles.

(b) the C—N—C bond angle in a secondary amine

You drew the Lewis structures of the following compounds and ion in Assessment 2.32. Predict their shapes around the central atom based on the Lewis structure.

(c) HCO₂H

Describe the orbitals used in bonding and the bond angles in the following compounds:

a. CH₃O^-

What is the hybridization of all the atoms (other than hydrogen) in each of the following?

What are the bond angles around each atom?

c. ^-CH₃

d. ⋅CH₃

For each of the following molecules, indicate the hybridization of each carbon and give the approximate values of all the bond angles:

b. CH₃CH═CH₂

a. Which of the species have bond angles of 109.5°?

b. Which of the species have bond angles of 120°?

NH₃ ⁺NH₄ ^-CH₃

Predict the approximate size of the following bond angles.

(a) the C—O—C bond angle in an ether

Predict the approximate size of the following bond angles.

(d) the C—N—C bond angle in a quaternary ammonium salt

Describe the orbitals used in bonding and the bond angles in the following compounds:

c. H₂CO

Describe the orbitals used in bonding and the bond angles in the following compounds:

d. N₂

Predict the approximate bond angles for

c. the H—C—N bond angle in (CH₃)₂NH.

d. the H—C—O bond angle in CH₃OCH₃