11 public questions tagged with this topic.
KMnOâ‚„ is used for bleaching textiles (wool, cotton, silk) due to its strong oxidizing power. 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.
Propan-1-ol (CH₃CH₂CH₂OH), a primary alcohol, is oxidized to propanoic acid (CH₃CH₂COOH) with KMnO₄, a strong oxidizing agent.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Physical Properties and Acidity of Alcohols and Phenols
1-Phenylethanol (C₆H₅CH(OH)CH₃), a secondary alcohol, is oxidized to acetophenone (C₆H₅COCH₃) with KMnO₄, stopping at the ketone stage.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Classification and Nomenclature and Structures of Alcohols Phenols Ethers
KMnO 4 is used as an oxidant, disinfectant, and in organic synthesis, but not as a reducing agent.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Preparation and Properties of Potassium Dichromate and Permanganate
Pyrolusite ore (MnO 2 ) is fused with KOH and oxidized to form KMnO 4 .
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Preparation and Properties of Potassium Dichromate and Permanganate
KMnO 4 is an oxidizing agent, not used as a reducing agent.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Preparation and Properties of Potassium Dichromate and Permanganate
In the first step, MnO 2 is oxidized with KOH in the presence of O 2 to form K 2 MnO 4 : 2MnO 2 + 4KOH + O 2 → 2K 2 MnO 4 + 2H 2 O
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Preparation and Properties of Potassium Dichromate and Permanganate
MnO 4 – oxidizes Fe 2+ to Fe 3+ and itself reduces to Mn 2+ .
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Lanthanoids - Electronic Configuration and Lanthanoid Contraction
KMnO 4 has Mn in +7 oxidation state (highest oxidation state for Mn).
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: General Properties of d-Block - Electronic Configuration and Trends
2KMnO 4 → K 2 MnO 4 + MnO 2 + O 2 (thermal decomposition at ~513K).
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Applications of d and f Block Elements
S (-2 in H₂S) becomes 0 in S, losing electrons.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
