Describe a common dry-cell battery. Include equations for the anode and cathode reactions.
The common dry cell battery contains only a small amount of liquid water within it. Thus such type of cell is known as dry cell battery.
An electrochemical cell consists of two half-cells: an anode and a cathode. The anode is the electrode where oxidation occurs and electrons are lost. The cathode is where reduction takes place and electrons are gained. These reactions don't occur separately; they must work together in a reduction-oxidation reaction.
For example let's assume the electrodes are zinc and copper.. The half-reaction on the anode, where oxidation occurs, is Zn(s) Zn2+(aq) + 2e-.
The zinc loses two electrons to form Zn2+.