Introduction:
Zinc and copper are two metals that are often used in electrochemical processes. When a piece of zinc is placed in a solution of copper sulphate, it will eventually develop holes. This phenomenon is due to a process known as galvanic corrosion.

Galvanic Corrosion:
Galvanic corrosion occurs when two dissimilar metals are in contact with each other in the presence of an electrolyte. In this case, the zinc and copper sulphate solution act as the two metals and the electrolyte, respectively. When these two metals come into contact, an electrochemical reaction occurs, and one of the metals becomes an anode while the other becomes a cathode.

Anode and Cathode:
The anode is the metal that undergoes oxidation, meaning that it loses electrons and becomes positively charged. In this case, the zinc will become the anode and will start to dissolve into the solution. The cathode is the metal that undergoes reduction, meaning that it gains electrons and becomes negatively charged. In this case, the copper ions in the solution will be reduced and deposited onto the surface of the zinc.

Corrosion Products:
As the zinc continues to dissolve, it will eventually form small pits or holes in the surface. These holes are caused by the accumulation of hydrogen gas at the anode, which can cause the metal to become porous and brittle. The corrosion products that are formed during this process will also accelerate the corrosion of the zinc, leading to further degradation of the metal.

Conclusion:
In conclusion, the development of holes in a zinc plate when placed in copper sulphate solution is due to a process known as galvanic corrosion. This process occurs when two dissimilar metals are in contact with each other in the presence of an electrolyte, and can lead to the degradation of the metal over time. To prevent galvanic corrosion, it is important to use metals that are similar in composition or to isolate them from each other using non-conductive materials.

1)formation of zinc sulphate due to displacement reaction2)cuso4 is a salt3)so metal are corroded or eaten up by salt4)so zinc develops hole