Скачать или смотреть Practical OC – Part 1 | Purification & Separation Techniques: Sublimation to Chromatography

Practical Organic Chemistry – Part 1 | Purification & Separation Techniques: Sublimation to Chromatography | ChembyKKSir

🌍 Namaste Dear Students! 🙏
Welcome to Practical Organic Chemistry (POC) – Part 1, an essential and high-scoring topic for NEET, JEE Main, JEE Advanced, and Class 11 & 12 Practical Exams.

In this powerful 1-hour lecture, I — Krishna Kumar Sah (ChembyKKSir) — have explained the Purification and Separation Techniques of Organic Compounds in the simplest, most scientific, and exam-oriented manner.

These purification methods form the backbone of the entire POC syllabus, and without mastering them, students cannot understand qualitative/quantitative analysis or functional group tests properly.

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💡 In This Lecture, You Will Learn:

⭐ Complete Introduction to Practical Organic Chemistry

• What is POC?
• Why purification is compulsory before analysis
• Full syllabus breakdown:
– Purification
– Qualitative estimation (detection of elements)
– Quantitative estimation (percentage composition)
– Functional group analysis
– Viva skills & practical exam format

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⭐ Purification & Separation Techniques (FULLY EXPLAINED)

🔹 1. Sublimation

• What type of solids undergo sublimation
• How sublimation separates volatile solids from non-volatile impurities
• Application examples

🔹 2. Crystallization

• Solvent selection
• Hot filtration / cold crystallization
• Removing colored impurities
• Practical lab steps

🔹 3. Simple Distillation

• When to use simple distillation
• Boiling point difference logic
• Laboratory setup & real examples

🔹 4. Fractional Distillation

• Fractionating column
• Separation of close-boiling liquids
• Organic chemistry examples (ethanol–water)

🔹 5. Distillation Under Reduced Pressure

• Why low pressure reduces boiling point
• For temperature-sensitive organic compounds
• Steam bath vs oil bath demonstration

🔹 6. Steam Distillation

• Separation of steam-volatile compounds
• Role of immiscible liquids
• Essential oils & aromatic compounds

🔹 7. Chromatography (Basics)

• Adsorption vs Partition
• Stationary & mobile phase
• Why chromatography gives best separation
• TLC/Column chromatography introduction

🔹 8. Differential Extraction

• Solvent extraction principle
• Organic layer vs aqueous layer
• Separating funnel explanation
• Application in purification of natural products

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⭐ Why This Lecture Is Important

This Part 1 builds your base for the next lectures on:
✔️ Lassaigne’s Test
✔️ Element detection
✔️ Functional group tests
✔️ Quantitative estimation of elements
✔️ Final revision & Viva preparation

Without understanding Part 1, Practical Organic Chemistry cannot be mastered.

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🎯 Best For:

• Class 11 Chemistry
• Class 12 CBSE / State Boards
• NEET UG Aspirants
• JEE Main & Advanced Aspirants
• MHT-CET | KCET | WBJEE | VITEEE
• All students preparing for Chemistry Practical Exams

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👨‍🏫 Educator:

Krishna Kumar Sah (ChembyKKSir)
Senior Chemistry Professor | Medical Head – EURO JEE–NEET, PCMC Pune
🎓 15+ Years Teaching Experience
Mentored NEET AIR 75 & JEE Advanced AIR 48

✨ “Purification is the first step of every organic experiment — learn it once, use it forever.”
✨ “Practical Organic Chemistry is easy when learned conceptually.”

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