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Which of the following is not the metame...

Which of the following is not the metamer of `CH_3CH_2-underset(CH_3)underset(|)N-CH_2CH_2CH_2CH_3`

A

`CH_(3)-underset(CH_3)underset(|)N-CH_(2)CH_(2)CH_(2)CH_(2)CH_(3)`

B

`CH_(3)-underset(H)underset(|)N-CH_(2)-underset(CH_3)underset(|)(CH)-CH_(2)CH_(2)CH_(3)`

C

D

`CH_(3)CH_(2)CH_(2)-underset(CH_3)underset(|)(N)-CH_(2)CH_(2)CH_(3)`

Text Solution

AI Generated Solution

The correct Answer is:
To determine which of the given compounds is not a metamer of the compound `CH3CH2(CH3)N-CH2CH2CH2CH3`, we need to follow these steps: ### Step 1: Identify the Functional Group The given compound is a tertiary amine. The functional group is characterized by the nitrogen atom bonded to three carbon-containing groups. **Hint:** Remember that a tertiary amine has the structure R1R2R3N, where R1, R2, and R3 are carbon chains or groups. ### Step 2: Understand Metamers Metamers are compounds that have the same molecular formula and functional group but differ in the arrangement of carbon atoms around the functional group. **Hint:** For metamers, the molecular mass and functional group must remain the same, but the carbon chain arrangements must differ. ### Step 3: Analyze the Given Compound The structure `CH3CH2(CH3)N-CH2CH2CH2CH3` has: - 7 carbon atoms (C) - 1 nitrogen atom (N) - The functional group is a tertiary amine. **Hint:** Count the number of carbon atoms and ensure that the functional group is maintained while varying the carbon chains. ### Step 4: Evaluate the Options We need to evaluate each option to see if it maintains the same functional group (tertiary amine) and the same molecular formula (C7H17N) while differing in carbon chain arrangement. 1. **Option A**: Check if it has a different carbon arrangement but still a tertiary amine. 2. **Option B**: Check if it has a different functional group (e.g., a secondary amine). 3. **Option C**: Check if it has a different carbon arrangement but still a tertiary amine. 4. **Option D**: Check if it has a different carbon arrangement but still a tertiary amine. **Hint:** Focus on the functional group and the arrangement of carbon atoms in each option. ### Step 5: Identify the Non-Metamer Upon evaluating the options: - **Option A**, **C**, and **D** maintain the tertiary amine functional group and have different carbon arrangements, making them metamers. - **Option B** has a hydrogen attached to nitrogen, making it a secondary amine, thus changing the functional group. ### Conclusion The compound that is not a metamer of `CH3CH2(CH3)N-CH2CH2CH2CH3` is **Option B** because it has a different functional group (secondary amine). **Final Answer:** Option B is not a metamer.
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