We want to find our goal is to find the cell voltage for the other half cell for the other half reaction. So, in the first step, we begin our problem by writing their reduction reaction for the entire equation for the entire process. So, solid zinc reacts with cadmium ions to produce aqueous zinc and solid cadmium. So let's figure out which one is oxidized and which one is reduced. This will help us place the metal that belongs to the anode and the metal that belongs to the cathode. So, zinc solid goes from a neutral charge to a plus two charge.