Interaction | Reaction | Process     Data Page

This reaction is used is the determination of iodide by titration.

The starch acts as an indicator because starch and iodine form a deep blue-black complex.

2
  +  
I2
  +  
Starch
         
  +  
2
I–
Reactant Page Go To Go To
Thiosulfate ion     Reactions Using    Reactions Forming
Iodine     Reactions Using    Reactions Forming
Starch Indicator    Reactions Using    Reactions Forming
Tetrathionate ion     Reactions Using    Reactions Forming
Iodide ion     Reactions Using    Reactions Forming

Interaction, Reaction, Process defined as:
British A-Level Chemistry: AS
Oxidation: Of Substrate By Reagent
Redox

© Mark R. Leach 1999 –

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