🧪 Iodine Value (I.V.) Lab System
📊 Solution Preparation Diagram
📘 Blank vs Sample + Quick Card
Enter values to see result...
📘 Formula Details
B = Blank titration (ml)
S = Sample titration (ml)
N = Normality of Na₂S₂O₃
W = Weight of carbon (g)
126.93 = Iodine equivalent weight
Iodine Solution Banane Ka Sahi Tarika
- ✔ Iodine (I₂) paani me bahut kam ghulta hai (~0.03 g/100 mL)
- ✔ Direct iodine paani me daalne se proper dissolve nahi hota
- ✔ Kuch iodine neeche settle ho sakta hai
- ✔ Solution ki accuracy kharab ho sakti hai
- ✔ Potassium Iodide (KI) ka role:
- ✔ KI paani me easily dissolve hota hai
- ✔ KI → I⁻ (iodide ion) deta hai
- ✔ I₂ + I⁻ → I₃⁻ (Triiodide ion) banta hai
- ✔ I₃⁻ paani me easily soluble hota hai
- ✔ Sahi Sequence:
- ✔ Step 1: KI ko paani me gholo
- ✔ Step 2: Iodine crystals add karo
- ✔ Step 3: Solution turant aur completely dissolve ho jayega
- ✔ Galat Sequence (I₂ pehle):
- ❌ Dissolution slow hoga
- ❌ Iodine settle ho sakta hai
- ❌ Normality galat ho sakti hai
- ❌ Test result me error aayega
- ✔ Easy Concept:
- ✔ KI = Iodine ka helper solvent
- ✔ KI iodine ko pakadkar paani me ghulata hai