To solve the problem, we need to determine the IUPAC names of the given organic compounds. Let's go through each compound step by step.
1. Compound 1:
\[
\text{H}_3\text{C} — \text{CH}_2 — \text{CH}_2 — \text{CH}_3
\]
- This is a straight-chain alkane with 4 carbon atoms.
- The parent chain is butane.
- There are no substituents or functional groups.
-
IUPAC Name: Butane
2. Compound 2:
\[
\text{H}_3\text{C} — \text{CH}_2 — \text{CH} = \text{CH} — \text{CH}_3
\]
- This is a straight-chain alkene with 5 carbon atoms.
- The parent chain is pentene.
- The double bond is between C-2 and C-3.
-
IUPAC Name: 2-Pentene
3. Compound 3:
\[
\text{H}_3\text{C} — \text{CH}_2 — \text{CH}_2 — \text{C} ≡ \text{CH}
\]
- This is a straight-chain alkyne with 5 carbon atoms.
- The parent chain is pentyne.
- The triple bond is between C-4 and C-5.
-
IUPAC Name: 4-Pentyne
4. Compound 4:
\[
\text{H}_3\text{C} — \text{CH}_2 — \text{CH} — \text{OH}
\]
- This is a straight-chain alcohol with 3 carbon atoms.
- The parent chain is propanol.
- The hydroxyl group (OH) is on C-2.
-
IUPAC Name: 2-Propanol
5. Compound 5:
\[
\text{H}_3\text{C} — \text{CH}_2 — \text{CH}_2 — \text{CH}_2 — \text{OH}
\]
- This is a straight-chain alcohol with 4 carbon atoms.
- The parent chain is butanol.
- The hydroxyl group (OH) is on C-4.
-
IUPAC Name: 1-Butanol
6. Compound 6:
\[
\text{H}_3\text{C} — \text{CH}_2 — \text{CH} — \text{CH}_3
\]
- This is a branched-chain alkane with 4 carbon atoms.
- The parent chain is butane.
- There is a methyl group (CH₃) on C-2.
-
IUPAC Name: 2-Methylbutane
7. Compound 7:
\[
\text{H}_3\text{C} — \text{CH}_2 — \text{CH} — \text{CH}_2 — \text{CH}_3
\]
- This is a straight-chain alkane with 5 carbon atoms.
- The parent chain is pentane.
- There are no substituents or functional groups.
-
IUPAC Name: Pentane
8. Compound 8:
\[
\text{H}_3\text{C} — \text{CH}_2 — \text{CH} — \text{CH}_2 — \text{CH}_3
\]
- This is a straight-chain alkane with 5 carbon atoms.
- The parent chain is pentane.
- There are no substituents or functional groups.
-
IUPAC Name: Pentane
9. Compound 9:
\[
\text{H}_3\text{C} — \text{CH}_2 — \text{CH} — \text{CH}_2 — \text{CH}_3
\]
- This is a straight-chain alkane with 5 carbon atoms.
- The parent chain is pentane.
- There are no substituents or functional groups.
-
IUPAC Name: Pentane
10. Compound 10:
\[
\text{H}_3\text{C} — \text{CH}_2 — \text{CH} — \text{CH}_2 — \text{CH}_3
\]
- This is a straight-chain alkane with 5 carbon atoms.
- The parent chain is pentane.
- There are no substituents or functional groups.
-
IUPAC Name: Pentane
Final Answer:
\[
\boxed{
\begin{array}{ll}
1. & \text{Butane} \\
2. & \text{2-Pentene} \\
3. & \text{4-Pentyne} \\
4. & \text{2-Propanol} \\
5. & \text{1-Butanol} \\
6. & \text{2-Methylbutane} \\
7. & \text{Pentane} \\
8. & \text{Pentane} \\
9. & \text{Pentane} \\
10. & \text{Pentane} \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of organic chemistry nomenclature practice worksheet.
