Write redox couples involved in the reactions (a) to (d) given in question 34.


Given that,
Cu+Zn2+Cu2++ZnMg+Fe2+Mg2++FeBr2+2Cl-Cl2+2BrFe+Cd2+Cd+Fe2+
 
(a) Cu2+/Cu and Zn2+/Zn
(b) Mg2+/Mg and Fe2+/Fe
(c) Br2/Br- and Cl2/Cl-
(d) Fe2+/Fe and Cd2+/Cd