Analytical Techniques

Chemistry Learning, O and A level Chemistry Courses / By

🔹 1. Infrared (IR) Spectroscopy 🔸 Principle: 🔸 Analysis of IR Spectrum: Functional Group Approx. Absorption Range (cm⁻¹) Description O–H (alcohol) 3200–3550 (broad) Strong, broad O–H (carboxylic acid) 2500–3300 (very broad) Overlaps with C–H C=O (carbonyl) 1680–1750 Sharp, strong N–H (amine/amide) 3300–3500 Sharp, medium C–H (alkane) ~2850–2960 Medium C=C (alkene) ~1620–1680 Weak to medium C≡C […]

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