Solved Fct. Groups - Families: Alkanes. Alkenes. Alkynes | Chegg.com - Free Printable

Let's go through each structure one by one, identify and circle the functional groups (other than alkanes), name them, and provide the organic family or class they belong to.

---

a.

Structure: CH₃–CH₂–CH₂–C(=O)–CH₂–CH₃
- Functional group: C=O (carbonyl) in the middle of the chain → ketone
- Circle: The C=O group
- Name: Ketone
- Family: Ketones

---

b.

Structure:
```
H₃C
|
C₆H₅
|
H₃C
```
This is 1,3-dimethylbenzene (or *m*-xylene).
- Functional group: Aromatic ring (benzene ring)
- Circle: The benzene ring
- Name: Aromatic ring
- Family: Arenes

---

c.

Structure: Br–CH₂–C(=O)–OH
- Functional groups:
- –Br → Bromine atom → Alkyl halide
- –COOH → Carboxylic acid
- Circle: Both –Br and –COOH
- Names:
- Bromo (alkyl halide)
- Carboxylic acid
- Families:
- Alkyl halides
- Carboxylic acids

---

d.

Structure: H₂N–C(=O)–CH(CH₃)–CH₂–CH₃
- Functional groups:
- –NH₂ → Amino group → Amine
- C=O adjacent to N → Amide
- Circle: –NH₂ and C=O bonded to N
- Names:
- Amine
- Amide
- Families:
- Amines
- Amides

---

e.

Structure: Cyclohexene with a C=O group on one carbon (attached to double bond)
→ This is cyclohex-2-en-1-one
- Functional groups:
- C=C → Alkene
- C=O → Ketone
- Circle: Double bond and carbonyl group
- Names:
- Alkene
- Ketone
- Families:
- Alkenes
- Ketones

---

f.

Structure: (CH₃)₃C–OH
- Functional group: –OH attached to tertiary carbon → Tertiary alcohol
- Circle: –OH
- Name: Alcohol
- Family: Alcohols

---

g.

Structure: Benzene ring – CH₂–O–CH₃
- Functional group: –O–CH₃ → Methoxy group → Ether
- Circle: –O–CH₃
- Name: Ether
- Family: Ethers

---

h.

Structure: CH₃–CH(NH₂)–C(=O)–OH
- Functional groups:
- –NH₂ → Amino group → Amine
- –COOH → Carboxylic acid
- Circle: –NH₂ and –COOH
- Names:
- Amine
- Carboxylic acid
- Families:
- Amines
- Carboxylic acids

---

i.

Structure: CH₃–CH(Cl)–C(=O)–H
- Functional groups:
- –Cl → Chloro → Alkyl halide
- C=O at end → Aldehyde
- Circle: –Cl and C=O
- Names:
- Chloro (alkyl halide)
- Aldehyde
- Families:
- Alkyl halides
- Aldehydes

---

j.

Structure: CH₃–C≡C–CH(NH₂)–CH₃
- Functional groups:
- C≡C → Alkyne
- –NH₂ → Amine
- Circle: Triple bond and –NH₂
- Names:
- Alkyne
- Amine
- Families:
- Alkynes
- Amines

---

k.

Structure: Chlorinated phenol (OH and two Cl on benzene ring)
- Functional groups:
- –OH on aromatic ring → Phenol
- –Cl → Chloro → Aryl halide
- Circle: –OH and both –Cl groups
- Names:
- Phenol
- Aryl halide
- Families:
- Phenols
- Aryl halides

---

l.

Structure: CH₃–C(=O)–N(CH₃)–CH₂–CH₃
- Functional group: C=O bonded to nitrogen → Amide
- Circle: C=O and N
- Name: Amide
- Family: Amides

---

m.

Structure: CH₃–CH(OH)–C(=O)–OH
- Functional groups:
- –OH → Alcohol
- –COOH → Carboxylic acid
- Circle: –OH and –COOH
- Names:
- Alcohol
- Carboxylic acid
- Families:
- Alcohols
- Carboxylic acids

---

n.

Structure: HO–CH₂–CH(NH₂)–CH₃
- Functional groups:
- –OH → Alcohol
- –NH₂ → Amine
- Circle: –OH and –NH₂
- Names:
- Alcohol
- Amine
- Families:
- Alcohols
- Amines

---

o.

Structure: CH₃–C(=O)–O–CH(CH₃)–C≡CH
- Functional groups:
- C=O + O– → Ester (from CH₃COO–)
- C≡C → Alkyne
- Circle: Ester group and triple bond
- Names:
- Ester
- Alkyne
- Families:
- Esters
- Alkynes

---

p.

Structure: CH₃–C(=O)–NH₂
- Functional group: C=O bonded to NH₂ → Amide
- Circle: C=O and NH₂
- Name: Amide
- Family: Amides

---

q.

Structure: Cyclopentane with Br on one carbon
- Functional group: –Br → Alkyl halide
- Circle: –Br
- Name: Alkyl halide
- Family: Alkyl halides

---

r.

Structure: Benzene ring with:
- –OH, –Cl, –C(=O)–O–CH₃, –NH₂
- Functional groups:
- –OH → Phenol
- –Cl → Aryl halide
- –C(=O)–O–CH₃ → Ester
- –NH₂ → Amine
- Circle: All four substituents
- Names:
- Phenol
- Aryl halide
- Ester
- Amine
- Families:
- Phenols
- Aryl halides
- Esters
- Amines

---

Summary Table:

| Letter | Functional Group(s) Identified | Name(s) | Organic Family/Class |
|--------|-------------------------------|---------|----------------------|
| a | Ketone | Ketone | Ketones |
| b | Aromatic ring | Aromatic | Arenes |
| c | –Br, –COOH | Bromo, Carboxylic acid | Alkyl halides, Carboxylic acids |
| d | –NH₂, amide | Amine, Amide | Amines, Amides |
| e | C=C, C=O | Alkene, Ketone | Alkenes, Ketones |
| f | –OH | Alcohol | Alcohols |
| g | –OCH₃ | Ether | Ethers |
| h | –NH₂, –COOH | Amine, Carboxylic acid | Amines, Carboxylic acids |
| i | –Cl, –CHO | Chloro, Aldehyde | Alkyl halides, Aldehydes |
| j | C≡C, –NH₂ | Alkyne, Amine | Alkynes, Amines |
| k | –OH, –Cl | Phenol, Aryl halide | Phenols, Aryl halides |
| l | Amide | Amide | Amides |
| m | –OH, –COOH | Alcohol, Carboxylic acid | Alcohols, Carboxylic acids |
| n | –OH, –NH₂ | Alcohol, Amine | Alcohols, Amines |
| o | Ester, C≡C | Ester, Alkyne | Esters, Alkynes |
| p | Amide | Amide | Amides |
| q | –Br | Alkyl halide | Alkyl halides |
| r | –OH, –Cl, ester, –NH₂ | Phenol, Aryl halide, Ester, Amine | Phenols, Aryl halides, Esters, Amines |

---

✔ Final Answer: For each compound, circle the functional groups as described above, write the name next to it, and classify by organic family.

> Note: In practice, you would draw circles around the functional groups on the image and label them accordingly. Since this is text-based, I've provided detailed instructions for each.

Let me know if you'd like a diagram version or help drawing it!