Year 11 chemistry problem the whole class is stuck on and our regular teacher is away for a month: A strip of substance x(2+) is placed in a red solution of y(2+) (aq). After 3 hours the red colour becomes less intense. There is no change after this. Some x(2+) still remains. a) write a reaction mechanism b) explain why the reaction stopped No problems with part b I just need help with the reaction mechanism. Any help appreciated. Thanks.