1. A Review of General Chemistry

What is the molecular formula for each of the following?

a. a 4-carbon hydrocarbon with two $\pi$ bonds and no rings

Determine the degree of unsaturation and then draw possible structures for noncyclic compounds with the following molecular formulas:

a. C₃H₆

In the context of degrees of unsaturation, a carbon-carbon triple bond contributes how many degrees of unsaturation to a molecule?

Given the molecular formula $C_6{H}_{10}$, how many degrees of unsaturation does this molecule have?

Given the molecular formula, calculate the index of hydrogen deficiency.

(a) C₆H₁₄O

Which of the following molecules is considered unsaturated?

Given the molecular formula $C_6{H}_6$, calculate the degree of unsaturation (DU) for this molecule.

What is the molecular formula for a monocyclic hydrocarbon with 14 carbons and 2 triple bonds?

Several studies have shown that β-carotene, a precursor of vitamin A, may play a role in preventing cancer. β-Carotene has a molecular formula of C₄₀H₅₆, and it contains two rings and no triple bonds. How many double bonds does it have?

For each molecular formula, represent all constitutional isomers using line-angle drawings.

(c) C₄H₁₀

What is the index of hydrogen deficiency (degree of unsaturation) for $C_6{H}_6$?

What is the index of hydrogen deficiency for each of the following molecular formulas?

(c) C₈H₁₄Cl₂

What is the molecular formula for each of the following?

b. a 10-carbon hydrocarbon with one $\pi$ bond and 2 rings

Determine the degree of unsaturation and then draw possible structures for noncyclic compounds with the following molecular formulas:

b. C₃H₄