Before revision: 2 HI + Cl2 → I2↑ + 2 HCl I2 + 2 H2O + SO2 → 2 HI + H2SO4 2 HI + Cl2 → I2↓ + 2 HCl These sources ensure that Chile and Japan are the largest producers of iodine today.
After revision: These sources ensure that Chile and Japan are the largest producers of iodine today.