Question

what would be the half reactions and voltage if graphite rod was cathode and zinc was anode?

Answer 1

The zinc loses two electrons to form Zn2+. The half-reaction on the cathode where reduction occurs is Cu2+ (aq) + 2e- = Cu(s). ... These batteries have a zinc container that is the anode that is filled with a paste of MnO2, graphite and NH4 Cl. They have a carbon rod going down their middle, which is the cathode.

Answer 2

$\huge\sf{\pink{\underline{\underline {♡Answer}}}}$

By convention in standard cell notation, the anode is written on the left and the cathode is written on the right. So, in this cell: Zinc is the anode (solid zinc is oxidised). Silver is the cathode (silver ions are reduced).