Amines — Class 12 Chemistry NCERT Solutions (Free)

Free step-by-step NCERT solutions for Class 12 Chemistry chapter "Amines" — 7 important questions with detailed answers for CBSE board exam preparation.

TL;DR: Free step-by-step NCERT solutions for Class 12 Chemistry chapter "Amines" — 7 important questions with detailed answers for CBSE board exam preparatio…

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Key Questions Covered:

  1. Define amines. What is the difference between primary, secondary, and tertiar…
  2. Explain the basicity of amines. Why are amines basic in character? Compare th…
  3. Write the IUPAC name of (CH3)2N-CH2-CH3. Describe its structure and classify …
  4. + 4 more questions in the full chapter

Solutions Summary:

Question Status
Define amines. What is the difference between primary, se… ✓ Solved
Explain the basicity of amines. Why are amines basic in c… ✓ Solved
Write the IUPAC name of (CH3)2N-CH2-CH3. Describe its str… ✓ Solved

Showing 3 of 7 questions

Q1: Define amines. What is the difference between primary, secondary, and tertiary amines? Give one example of each.

Amines: Organic compounds derived from ammonia (NH3) by replacement of one, two, or three hydrogen atoms with alkyl or aryl groups. General formula: R-NH2, R2N-H, or R3N Classification: Primary amines (1° amine): - One hydrogen of ammonia is replaced by an alkyl or aryl group - General formula: R...

Q2: Explain the basicity of amines. Why are amines basic in character? Compare the basicity of primary, secondary, and tertiary amines.

Basicity of amines: Amines are basic because they contain a lone pair of electrons on the nitrogen atom. This lone pair can accept a proton (H+) from an acid. General reaction: R-NH2 + HX → R-NH3+ + X- (or R-NH3+X-) The amine acts as a proton acceptor (Lewis base): R-NH2 + H+ → R-NH3+ Basic stre...

Q3: Write the IUPAC name of (CH3)2N-CH2-CH3. Describe its structure and classify this amine.

Structure of (CH3)2N-CH2-CH3: CH3 | CH3-N-CH2-CH3 | CH3 Alternative representation: CH3-N(CH3)-CH2-CH3 IUPAC name: N,N-dimethylethanamine Naming explanation: 1. Main chain: ethane (2 carbons attached to N in the longest chain) 2. Functional group: amine (-amine suffix) 3. T...

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