Chemistry · Class 12 · Chapter 7
Alcohols, Phenols and Ethers
13 lessons 97 min 2 simulations
Alcohols, phenols and ethers are the organic compounds built around a C–O single bond: –OH on an aliphatic carbon, –OH on an aromatic ring, or oxygen bridging two carbon groups. The chapter classifies and names them, relates their structure to boiling point, solubility and acidity, and works through their preparation, the reactions that break O–H or C–O bonds, oxidation, ring substitution in phenols and anisole, and the two alcohols made on an industrial scale.
What the exam asks
NEET tests the acidity order of substituted phenols against pKa, reagents for each preparation (hydroboration, Grignard, cumene, Williamson), the Lucas test, products of controlled oxidation (PCC, CrO₃, KMnO₄, Cu at 573 K), the named phenol reactions (Kolbe, Reimer–Tiemann), and the cleavage of ethers by HI. Marks are lost by reading a larger pKa as a stronger acid, pairing a tertiary halide with an alkoxide in Williamson synthesis, and breaking the wrong C–O bond in anisole.
Lessons
13 lessons · 97 min
1ClassificationNCERT §7.16 min2Nomenclature and structureNCERT §7.2–7.36 min3Preparing alcoholsNCERT §7.4.16 min4Preparing phenolsNCERT §7.4.26 min5Physical propertiesNCERT §7.4.36 min6Acidity of alcohols and phenolsNCERT §7.4.410 min 1 sim7Esterification, HX and dehydrationNCERT §7.4.47 min8Oxidation of alcoholsNCERT §7.4.410 min 1 sim9Reactions of phenolsNCERT §7.4.46 min10Methanol and ethanolNCERT §7.56 min11Preparing ethersNCERT §7.6.16 min12Ethers: properties and reactionsNCERT §7.6.2–7.6.36 min13Chapter reviewMust-know facts, traps and formulas16 min