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Organic Nitrogen Compounds — Formula Sheet

Tamil Nadu Board · Class 12 · Chemistry

6 formulas from Organic Nitrogen Compounds (Tamil Nadu Board Class 12 Chemistry) on one page, grouped by topic.

45 questions36 flashcards6 formulas & key relations5 concepts

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A diagram illustrating the tautomeric relationship between hydrogen cyanide (HCN) and hydrogen isocyanide (HNC), and their corresponding alkyl derivatives, alkyl cyanides (RCN) and alkyl isocyanides (
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6 Entries · 3 Sections

Formulas and Key Relations

1.5-13.1.8 Preparation and Properties of Nitro Compounds

CH₃CH₂-Br + KNO₂ → CH₃CH₂-NO₂ + KBr (follows SN2 mechanism)

INDUSTRIAL PREPARATION

Vapor-phase nitration at 675K - methane + HNO₃ → nitromethane + H₂O

2.3-13.2.5 Preparation Methods of Amines

METHOD 1 - REDUCTION OF NITRO COMPOUNDS

Nitroalkanes/nitroarenes + H₂/Ni (or Sn/HCl or Pd/H₂) → Primary amines

CH₃CH₂-NO₂ + 6[H] → CH₃CH₂-NH₂ + 2H₂O (using Ni catalyst with H₂)

METHOD 2 - REDUCTION OF NITRILES

R-CN + 4[H] → R-CH₂-NH₂ (using LiAlH₄ or Na/C₂H₅OH)

Key relations

Primary and secondary nitroalkanes exhibit tautomerism between the nitro form (R-NO₂) and the aci-form (R-N(OH)=O).

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Frequently Asked Questions

What are the important topics in Organic Nitrogen Compounds for Tamil Nadu Board Class 12 Chemistry?
Key topics in Organic Nitrogen Compounds include 1 NITRO COMPOUNDS - Classification, Structure & Preparation, 1.5-13.1.8 Preparation and Properties of Nitro Compounds, 2 AMINES - Classification, Structure & Basicity, 2.3-13.2.5 Preparation Methods of Amines. Study these first, then practise questions on each for the Tamil Nadu Board Class 12 board exam.
How many formulas are in Organic Nitrogen Compounds?
This sheet lists 6 formulas from Organic Nitrogen Compounds, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Organic Nitrogen Compounds for the Tamil Nadu Board Class 12 board exam?
Learn the core ideas first, then work through the 45 practice questions on Organic Nitrogen Compounds. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All Tamil Nadu Board Class 12 Chemistry Formula Sheet

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