Grade 12Inorganic Chemistry
4 When CoCl2 is dissolved in water, a pale coloured pink solution is obtained. On adding conc. HCl the solution turns an intense blue colour. Suggest structures for the pink and the blue complexes, and draw the appropriate orbital splitting diagrams. What is the reason for the change in colour? Calculate the spin-only magnetic moments of the two complexes you propose.
4 When CoCl2 is dissolved in water, a pale coloured pink solution is obtained. On adding conc. HCl the solution turns an intense blue colour. Suggest structures for the pink and the blue complexes, and draw the appropriate orbital splitting diagrams. What is the reason for the change in colour? Calculate the spin-only magnetic moments of the two complexes you propose.
