Chemistry, asked by prernavlko5904, 11 months ago

To the electroplating zinc what is your introduction

Answers

Answered by rao2004priya
1

Explanation:

An Introduction to Electroplating

Electroplating is the process of coating a metal object with another metal, using electrical current passed through a chemical solution.

This process produces a thin, metallic coating on the surface of the metal object. The main purposes of electroplating are to improve the appearance of the material and provide protection against corrosion.

Since metal is being taken from the solution it must be replenished. This is done by hanging pieces of the metal to be replenished in the solution. The chunks of metal are called anodes and the positive electrical lead is attached to these chunks of metal. They dissolve in the solution as metal is taken away by plating. At this point we have metal being removed from the anode and deposited on the cathode. Cathodes are the parts being plated.

The anode and cathode in the electroplating cell are both connected to an external supply of direct current — a battery or, more commonly, a rectifier. The anode is connected to the positive terminal of the supply, and the cathode (article to be plated) is connected to the negative terminal. When the external power supply is switched on, the metal at the anode is oxidized from the zero valence state to form cations with a positive charge. These cations associate with the anions in the solution. The cations are reduced at the cathode to deposit in the metallic, zero valence state. For example, in an acid solution, copper is oxidized at the anode to Cu2+ by losing two electrons. The Cu2+ associates with the anion SO42- in the solution to form copper sulfate. At the cathode, the Cu2+ is reduced to metallic copper by gaining two electrons. The result is the effective transfer of copper from the anode source to a plate covering the cathode

HOPE IT HELPS YOU.....✌✌

PLZZ MARK AS BRAINLIEST ...❤❤

Similar questions