IODINE

• WHAT IS IODINE EXTRACTED FROM?

  kelp
• HOW IS IODINE EXTRACTED FROM KELP?

  1. Kelp is washed to remove salts
  2. Residue is heated with manganese dioxide and concentrated H2SO4
  3. Iodine is liberated
• EQUATION FOR EXTRACTION OF IODINE?

  2I- + MnO2 + 4H+ -> Mn (2+) + 2H2O + I2