2Cu2+ + 5I- = 2CuI+ 1I3-
你说的是这个方程式吧,好象就是这样子的,可以把I3-看做一个碘单质和一个碘离子,这样从右边配起就可以了,你再试试吧,不行来找我```````````````````````````````` ^0^