58 public questions tagged with this topic.
In 2K₄[Fe(CN)6] + H₂O₂ -> 2K₃[Fe(CN)6] + 2KOH, K is removed from K₄[Fe(CN)6], and Fe (+2 to +3) is oxidized. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom and Periodicity, Topic: Mole concept, atomic models and periodic trends.
In 2H₂O₂ -> 2H₂O + O₂, only O (-1 to -2 and 0) changes; H (+1) stays constant. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom, Periodicity and relevant Chemistry topic, Topic: Mole concept and periodic trends.
Pyridinium chlorochromate (PCC) is used to selectively oxidize primary alcohols to aldehydes without further oxidation to carboxylic acids. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Relevant Chemistry topic covering principles and examples as per NCERT.
PCC oxidizes primary alcohols to aldehydes. 2-Methylpropan-1-ol ((CH₃)₂CHCH₂OH) yields 2-methylpropanal ((CH₃)₂CHCHO).
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
Oxidation of acetaldehyde (CH₃CHO) with a strong oxidizing agent like K₂Cr₂O₇/H₂SO₄ yields acetic acid (CH₃COOH).
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Nomenclature, Structure and Preparation of Aldehydes and Ketones
Nitric acid, a strong oxidizing agent, oxidizes both the aldehyde and primary alcohol groups of glucose to carboxylic acids, forming saccharic acid.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Carbohydrates - Monosaccharides - Structure and Properties
Phenol (C₆H₅OH) undergoes oxidation in air to form quinones and other colored compounds, which may impart a yellowish or brownish color.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Phenols and Ethers - Williamson and Other Methods
Propan-1-ol (CH₃CH₂CH₂OH) oxidizes to propanal (CH₃CH₂CHO) with PCC, which lacks the CH₃CO- group and does not give an iodoform reaction.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Phenols and Ethers - Williamson and Other Methods
Pentan-2-ol (CH₃CH(OH)CH₂CH₂CH₃), a secondary alcohol, is oxidized to pentan-2-one (CH₃COCH₂CH₂CH₃) with PCC.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Phenols and Ethers - Williamson and Other Methods
Propan-1-ol (CH₃CH₂CH₂OH), a primary alcohol, is oxidized to propanal (CH₃CH₂CHO) with PCC, which stops at the aldehyde stage.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Phenols and Ethers - Williamson and Other Methods
Pentan-2-ol (CH₃CH(OH)CH₂CH₂CH₃) oxidizes to pentan-2-one (CH₃COCH₂CH₂CH₃), which has a CH₃CO- group and gives a positive iodoform test.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Phenols and Ethers - Williamson and Other Methods
PCC oxidizes secondary alcohols to ketones without further oxidation, unlike strong oxidants like KMnO₄.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Phenols and Ethers - Williamson and Other Methods
