Question

An aqueous solution containing one mole of HgI₂ and two moles of NaI is orange in colour. On addition of excess NaI the solution becomes colouress. The orange colour reappears on subsequent addition of NaOCl. Explain with equations.

Answer 1

On addition of excess NaI the solution becomes colouress. The orange colour reappears on subsequent addition of NaOCl.