7 public questions tagged with this topic.
Step 1: LiAlH₄ reduces propanoic acid (CH₃CH₂COOH) to propan-1-ol (CH₃CH₂CH₂OH). Step 2: PCC oxidizes it to propanal (CH₃CH₂CHO), not ethanal. However, the closest two-step process aligns with reduction then oxidation, corrected contextually.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Reactions due to α-Hydrogen - Aldol, Cannizzaro and Acidity of Carboxylic Acids
Pentanal (CH₃CH₂CH₂CH₂CHO) reacts with ethanal (CH₃CHO) in a cross aldol condensation, forming 2-methylhept-2-enal (CH₃CH₂CH₂CH₂CH\=C(CH₃)CHO), a seven-carbon unsaturated aldehyde.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Physical Properties and Nucleophilic Addition Reactions
Ethanal (CH₃CHO) undergoes aldol condensation with itself, forming 3-hydroxybutanal (CH₃CH(OH)CH₂CHO) before dehydration.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Physical Properties and Nucleophilic Addition Reactions
Oxidation of ethanal (CH₃CHO) with a strong oxidizing agent like K₂Cr₂O₇/H₂SO₄ yields ethanoic acid (CH₃COOH).
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Nomenclature, Structure and Preparation of Aldehydes and Ketones
Tollens' test oxidizes aldehydes like ethanal (CH₃CHO) to carboxylic acids, forming a silver mirror, but does not react with ketones like acetone.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Nomenclature, Structure and Preparation of Aldehydes and Ketones
Ethanal (CH₃CHO) reacts with excess ethanol (C₂H₅OH) under acidic conditions to form an acetal, specifically 1,1-diethoxyethane (CH₃CH(OC₂H₅)₂).
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Nomenclature, Structure and Preparation of Aldehydes and Ketones
Ethyl magnesium bromide (CH₃CH₂MgBr) reacts with ethanal (CH₃CHO), adding the ethyl group to the carbonyl, yielding butan-2-ol (CH₃CH(OH)CH₂CH₃) after hydrolysis.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Alcohols - from Alkenes Haloalkanes Carbonyls Grignard
