Three different compounds of chromium(III) with water and chloride ion have the same composition: 19.51% Cr, 39.92% Cl, and 40.57% H₂O. One of the compounds is violet and dissolves in water to give a complex ion with a 3+ charge and three chloride ions. All three chloride ions precipitate immediately as AgCl on adding AgNO₃. Draw the structure of the complex ion, and name the compound. Write a net ionic equation for the reaction of this compound with silver nitrate.