Assignment:
Question 1. What are the Equations: The redox processes in converting CrO3 to [Cr(H2O)5Br]2+. We dissolve chromium trioxide in acid to get CrO4(2-), and add that to a solution of hydrogen peroxide/perchloric acid. that should give [Cr(H2O)6]3+. This is then passed through a jones reductor into an perchloric acid/bromine solution to give the [Cr(H2O)5Br]2+?
Why does boiling change the colour of the solution (obviously a change in ligands?)
Question 2. Reaction pathway: reduction of [Co(NH3)5Cl]2+ (pink, cobalt(iii)) by [Cr(H2O)6]2+ to give? (green solution)
This is then gently heated, and changes colour (to blue) and addition of AgNO3 gives a ppt (AgCl). Why? and why are the perchlorate salts of cobalt and chromium used?
Provide complete and step by step solution for the question and show calculations and use formulas.