Redox Titration

• General features of Redox reaction

  Oxidation, Reduction, Oxidation-Reduction or Redox reaction
• Oxidation 


  is the loss of electrons from an atom
• Reduction


  is the gain of electrons by an atom
• Oxidation-Reduction / Redox reaction 


  where in the both process of oxidation and reduction occur in a single reaction
• Redox reaction 


  this involves the transfer of electrons from one element to another
• Leora 


  known as the loss of electrons: oxidation, reducing agents
• Geroa


  known as the gain of electrons: reduction, oxidizing agent
• Oxidation

  gain of oxygen atoms
• Oxidation

  loss of hydrogen atoms
• Reduction

  loss of oxygen atoms
• Reduction

  gain of hydrogen atoms
• Oxidation-reduction / Redox reaction 


  is the type of chemical reaction that involves a transfer of electrons between two species.
• Oxidation-reduction reaction 


  is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron
• Redox Titration 


  determine the concentration of an unknown solution or an analyte which contains an oxidizing or reducing agent.
• Oxidizing Agents

  Ferric ammonium sulfate
• Oxidizing Agents

  Potassium permanganate
• Oxidizing Agents

  Potassium dichromate
• Oxidizing Agents

  Potassium bromate
• Oxidizing Agents

  Potassium iodate
• Oxidizing Agents

  Potassium ferricyanide
• Oxidizing Agents

  Ceric sulphate
• Oxidizing Agents

  Iodine
• Oxidizing Agents

  Bromine
• Reducing Agents

  Ferrous ammonium sulfate
• Reducing Agents

  Oxalic acid
• Reducing Agents

  Potassium arsenite
• Reducing Agents

  Titanium chloride
• Reducing Agents

  Sodium thoisulfate
• Titrant:             Potassium Permanganate

  Primary standard: Sodium Oxalate

  Indicator:         Permanganate solution

  Endpoint:         Pale Pink Color
• Titrant:             0.1 N Oxalic Acid

  Primary standard: Oxalic Acid

  Indicator:         Permanganate solution

  Endpoint:         Pale Pink Color
• Titrant:             0.1 N Ceric Sulfate

  Primary standard: Arsenic Trioxide

  Indicator:         Orthophenantroline Solution  

  Endpoint:         Pale Blue
• Permanganate

  Titrant:             Potassium permanganate (KMnO4)

  Primary standard: Sodium oxalate (Na2C2O4)

  Indicator:         KMnO4 (self-indicator)

  Endpoint:         Distinct pink color
• Direct Permanganometry

  assay of Hydrogen peroxide (H2O2) Topical Solution
• Indirect Permanganometry

  Assay of Cherry juice for Malic acid, titanium dioxide (TiO2), manganese dioxide (MnO2)
• Residual Permanganometry

  assay of Potassium nitrite (KNO2), Sodium nitrite (NaNO2)
• Direct Permanganometry

  Analyte: Hydrogen peroxide (H2O2) Topical Solution

  Titrant: KMnO4

  Primary standard: Sodium Oxalate

  Indicator: Self-indicating (KMnO4)

  Endpoint: Pink
• Indirect Permanganometry

  Analyte:           Radium (RA) + KMnO4

  Titrant:             KMnO4

  Primary standard: Sodium Oxalate

  Indicator:         Self-indicating (KMnO4)  

  Endpoint:         Pink
• Residual Permanganometry

  Analyte:           Potassium nitrite (KNO2), Sodium nitrite (NaNO2)

  Titrant:              Assay of NaNO2: Ferrous Sulfate & KMnO4 or Oxalic Acid & KMnO4

  Primary standard: Sodium Oxalate

  Indicator:         Self-indicating (KMnO4)  

  Endpoint:         Pink
• Titration in which an access of standard KMnO4 solution is employed to oxidize a substance.
• Titration in which an excess of standard Oxalic acid solution is added to the substance and excess oxalic acid is titrated with standard KMnO4