Questions: Question 7 (10 points) Match the boiling points to the correct compounds. 1-butanol pentane butanone Question 8 (10 points) 1. 36°C 2. 80°C 3. 118°C

Question 7 (10 points)
Match the boiling points to the correct compounds.
1-butanol
pentane
butanone

Question 8 (10 points)
1. 36°C
2. 80°C
3. 118°C

Transcript text: Question 7 (10 points) Match the boiling points to the correct compounds. 1-butanol pentane butanone Question 8 (10 points) 1. $36^{\circ} \mathrm{C}$ 2. $80^{\circ} \mathrm{C}$ 3. $118^{\circ} \mathrm{C}$

Solution

Solution Steps

Step 1: Identify the Compounds and Their Boiling Points

We need to match the boiling points to the correct compounds: 1-butanol, pentane, and butanone. The boiling points given are $36^{\circ} \mathrm{C}$, $80^{\circ} \mathrm{C}$, and $118^{\circ} \mathrm{C}$.

Step 2: Analyze the Boiling Points

Pentane is a simple alkane with relatively weak intermolecular forces (van der Waals forces), leading to a lower boiling point.
Butanone (also known as methyl ethyl ketone) has a carbonyl group, which increases its boiling point due to dipole-dipole interactions.
1-Butanol has a hydroxyl group, allowing for hydrogen bonding, which significantly increases its boiling point.

Step 3: Match the Boiling Points

Pentane: The lowest boiling point, $36^{\circ} \mathrm{C}$, corresponds to pentane due to its weak van der Waals forces.
Butanone: The middle boiling point, $80^{\circ} \mathrm{C}$, corresponds to butanone due to dipole-dipole interactions.
1-Butanol: The highest boiling point, $118^{\circ} \mathrm{C}$, corresponds to 1-butanol due to hydrogen bonding.