Lec 5 Chapter 2 BSc 4th Semester DSC Chemistry Alcohols And Phenols Glycerol By Mk Sir

#Lec 4 Chapter 2 BSc 4th Semester DSC Chemistry Alcohols And Phenols Glycerol By Mk Sir 🧪 Glycerol – Chemistry Winner Mk Sir Chemistry Winner Mk Sir YouTube Channel पर आज हम पढ़ेंगे Glycerol (ग्लिसरॉल) – Structure, Preparation, Glycerol का IUPAC नाम Propane-1,2,3-triol है। Molecular Formula: C₃H₈O₃ यह एक Trihydric Alcohol है (तीन –OH group होते हैं)। यह colorless, sweet, viscous (चिपचिपा) liquid होता है। 👉 Structure: HO–CH₂–CH(OH)–CH₂–OH 🔹 2. Preparation (तैयारी) 1️⃣ From Fats and Oils (Saponification Reaction) जब fats या oils को NaOH/KOH के साथ heat करते हैं तो soap और glycerol बनता है। Fat + NaOH → Soap + Glycerol 2️⃣ From Propene (Industrial Method) Propene से oxidation और hydrolysis द्वारा glycerol तैयार किया जाता हैl 🔹 3. Physical Properties (भौतिक गुण) Colorless, odorless liquid Sweet taste Highly soluble in water High boiling point (290°C approx.) Hygroscopic (पानी को absorb करता है) 🔹 4. Chemical Properties (रासायनिक गुण) ✅ Reaction with Na Glycerol + Na → Sodium glyceroxide + H₂ ✅ Esterification Reaction Acid के साथ react करके ester बनाता है। Glycerol + 3HNO₃ → Nitroglycerin ⚠️ Nitroglycerin एक explosive compound है। 🔹 5. Uses (उपयोग) Cosmetics और moisturizers में Pharmaceutical syrups में Food industry में sweetening agent Nitroglycerin बनाने में Antifreeze के रूप में 🎯 Exam Important Points Glycerol एक Trihydric Alcohol है। तीन –OH group होने के कारण hydrogen bonding strong होती है। Highly viscous और hygroscopic nature important question है। अगर आप BSc 4th Semester Chemistry की तैयारी कर रहे हैं, तो यह topic Alcohols chapter में बहुत important है। 📚 Subscribe करें – Chemistry Winner Mk Sir Like 👍 | Share 🔁 | Comment 💬

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