Question

Give short notes on each of the following:
(a) Applications of electrolysis
(b) Electroplating
(c) Purification of metals by electrolysis​

Answer 1

Answer:

Explanation:

Electroplating is a process of coating one metal on the another. This process is done for decorative purpose or for preventing it from rusting. Example: Coating iron with copperLet A be metal on which B metal has to be coated. B is generally a least reactive metal while A is most reactive metal. Take electrolyte as a solution of metal B salt. Use metal A as cathode while B as anode. That is connect metal A to the negtaive terminal and B to the positive terminal of battery. After few minutes, you will observe that anode (metal B) starts dissolving in water and also starts depositing on cathode (metal B). This is how metal B is electroplated on metal A. REASONS FOR ELECTROPLATING - DEFINITION

Electroplating is done to enhance the appearance and prevent the metal from rusting. It changes the surface properties of an object like corrosion protection, abrasion, etc. It can also be used to build up the thickness of undersized parts.Following are the condition electroplate one metal on another.  

The article which is to be electroplated should be taken as a cathode. The metal used during electrolysis should be placed as an anode.  

Periodic replacement of anode metal should be done.  

Lower current for a longer time should be used.  

The current used in the process of electroplating should be direct current (DC). mark me as brainliest