Organic Chemistry Naming Worksheet with structural formulas and names of organic compounds.

It looks like you've uploaded a naming worksheet for organic chemistry, where the task is to:

1. Name each organic compound shown in the structures.
2. Circle the functional group, if present.

Let's go through each structure one by one, correcting any errors, and identifying or verifying the correct names and functional groups.

---

🔹 Row 1:

#### Left:
Structure:
```
H H H
| | |
H–C–C–C–CH₃
| | |
H H H
```

- This is a 4-carbon chain with no functional group → Butane
- But the name given is "Propanol", which is incorrect.
- ✔ Correct name: Butane

#### Right:
Structure:
```
CH₃–CH₂–CH(OH)–CH₃
```
- OH group on carbon 2 → 2-butanol
- Name given: 2-butanol ✔ Correct
- Functional group: OH (alcohol) → Circle the –OH

---

🔹 Row 2:

#### Left:
Structure:
```
H H O
| | ||
H–C–C–C–O–H
| | |
H H H
```
- Carboxylic acid group (–COOH)
- Chain: 3 carbons → Propanoic acid
- Given name: Propionic Acid → ✔ Correct (common name)
- Functional group: –COOH (carboxylic acid) → Circle it

#### Right:
Structure:
```
H–C–C–C–C–C–H
| | | | | |
H H H H H H
```
- 5-carbon straight chain alkane → Pentane
- Given name: Pentane ✔ Correct
- No functional group

---

🔹 Row 3:

#### Left:
Structure:
```
H–C=C–C–C–H
| | | |
H H H H
```
- Double bond between C2 and C3 → 2-pentene
- But the name given is 2-butene ✘ Incorrect
- Chain has 5 carbons → should be 2-pentene
- Functional group: C=C (alkene) → Circle the double bond

#### Right:
Structure:
```
H H H
| | |
H–C–C–C–CH₃
| | |
H H H
```
- 4-carbon chain → Butane
- Given name: Butanal ✘ Incorrect
- Butanal would have an aldehyde group (–CHO), but this is just butane.
- ✔ Correct name: Butane

---

🔹 Row 4:

#### Left:
Structure:
```
H O
| ||
H–C–C–O–H
| |
H H
```
- 2-carbon chain with –COOH → Ethanoic acid
- Given name: Ethanoic Acid ✔ Correct
- Functional group: –COOH → Circle it

#### Right:
Structure:
```
H–C–C–C–C≡C–H
| | | | |
H H H H H
```
- 5-carbon chain with triple bond at C1 → 1-pentyne
- Given name: 1-pentyne ✔ Correct
- Functional group: C≡C (alkyne) → Circle the triple bond

---

🔹 Row 5:

#### Left:
Structure:
```
CH₃–CH₂–CH₂–C(=O)–CH₃
```
- 5-carbon chain, ketone at C2 → 2-pentanone
- Given name: 2-pentanone ✔ Correct
- Functional group: C=O (ketone) → Circle the carbonyl

#### Right:
Structure:
```
H–C–C–C–C–C(=O)–OH
| | | | | |
H H H H H H
```
- 6-carbon chain with –COOH at end → Pentanoic acid? Wait — 6 carbons → Hexanoic acid
- But the name says Pentanoic acid ✘ Incorrect
- The chain is 6 carbons long → Hexanoic acid
- Functional group: –COOH → Circle it

---

🔹 Row 6:

#### Left:
Structure:
```
CH₃–CH₂–CH₂–CH₂–C≡C–CH₃
```
- 7-carbon chain, triple bond at C2 → 2-heptyne
- But named as 2-hexyne ✘ Incorrect
- Hexyne = 6 carbons; this is 7 → 2-heptyne
- Functional group: C≡C → Circle triple bond

#### Right:
Structure:
```
H H
| |
H–C–C–C–H
| |
H H
```
- 3-carbon chain, no functional group → Propane
- Given name: Propane ✔ Correct
- No functional group

---

🔹 Row 7:

#### Left:
Structure:
```
H
|
H–C–O–H
|
H
```
- CH₃OH → Methanol
- Given name: Methanol ✔ Correct
- Functional group: –OH (alcohol) → Circle it

#### Right:
Structure:
```
H–C–C–C–C–C(=O)–OH
| | | | | |
H H H H H H
```
- 6-carbon chain with –COOH → Hexanoic acid
- Named: Butanoic acid ✘ Incorrect
- Butanoic acid = 4 carbons; this is 6 → Hexanoic acid
- Functional group: –COOH → Circle it

---

✔ Summary of Corrections:

| Structure | Given Name | Correct Name | Functional Group |
|---------|------------|--------------|------------------|
| 1L | Propanol | Butane | None |
| 1R | 2-butanol | ✔ Correct | –OH |
| 2L | Propionic Acid | ✔ Correct | –COOH |
| 2R | Pentane | ✔ Correct | None |
| 3L | 2-butene | 2-pentene | C=C |
| 3R | Butanal | Butane | None |
| 4L | Ethanoic Acid | ✔ Correct | –COOH |
| 4R | 1-pentyne | ✔ Correct | C≡C |
| 5L | 2-pentanone | ✔ Correct | C=O |
| 5R | Pentanoic acid | Hexanoic acid | –COOH |
| 6L | 2-hexyne | 2-heptyne | C≡C |
| 6R | Propane | ✔ Correct | None |
| 7L | Methanol | ✔ Correct | –OH |
| 7R | Butanoic acid | Hexanoic acid | –COOH |

---

✔ Final Answer:

You should correct the following names and circle the functional groups as follows:

- Butane (not Propanol) — no FG
- 2-butanol — circle –OH
- Propanoic acid — circle –COOH
- Pentane — no FG
- 2-pentene — circle C=C
- Butane — no FG
- Ethanoic acid — circle –COOH
- 1-pentyne — circle C≡C
- 2-pentanone — circle C=O
- Hexanoic acid — circle –COOH
- 2-heptyne — circle C≡C
- Propane — no FG
- Methanol — circle –OH
- Hexanoic acid — circle –COOH

---

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