# Formulate the electrochemical cell representing the reaction 2Cr +3Fe2+ --->2cr3+ 3Fe

Dear Student,

In an electrochemical cell the anode and the cathode [half-cells] are separated by two bars or slashes , which represent a salt bridge. The anode is placed on the left and the cathode on the right.
The formulation of the electrochemical cell representing the reaction is:
2Cr + 3Fe2+ $\to$  2Cr3+ + 3Fe

Cr(s)/Cr3+ // Fe2+/Fe(s)
Thus after writing the electrochemical cell representation and knowing the values of reduction and oxidation potential, the Eocell value can be obtained.