Current Chemical Effects
When we pass current through a solid conductor it gets heated and also a magnetic field is produced around the conduct ro. It shows that there is a heating effect as well as magnetic effect of current but there is no chemical effect in a solid conductor. On the other hand if current is passed through a liquid it ma or ma not allows the current to pass through it. Current can produce or speed up chemical change, this ability of current is called chemical effect (shown by dc not by ac).
Electrolytes: The liquids which allows the current to pass through them and also dissociates into ions on passing current through them are called electrolytes e.g. solutions of salts, acids and bases in water, etc. Those liquids which do not allow current to pass through them are called insulators (e.g. vegetable oils, distilled water etc.) Solutions of cane sugar, glycerin, alcohol etc. are examples of non-electrolytes.
Electrolysis: The process of decomposition of electrolyte solution into ions on passing the current through it is called electrolysis. Practical applications of electrolysis are Electrotyping, extraction of metals from the ores, Purification of metals, Manufacture of chemicals, Production of O2 and H2, Medical applications and electroplating.
Electroplating: It is a process of depositing a thin layer of one metal over another metal by the method of electrolysis. The articles of cheap metals are coated with precious metals like silver and gold to make their look more attractive. The article to be electroplated is made the cathode and the metal to be deposited is made the anode. A soluble salt of the precious metal is taken as the electrolyte. (If gold is to be coated then auric chloride is used as electrolyte).
Voltmeter: The vessel in which the electrolysis is carried out is called a voltmeter. It contains two electrodes and electrolyte. It is also known as electrolytic cell.
(1) Insulators. There are those liquids which do not allow current to pass through them. For example vegetable oil distilled water etc.
(2) Goods conductors: These are those liquids which allow the current to pass through them but do not dissociate into ions. For example mercury (a liquid metal at ordinary temperature).
(3) Electrolytes. The liquids which allow the current to pass through them and also dissociate into ions on passing the current through them are called electrolytes. For example the solution of salts, acids and bases in water alcohol etc.
Therefore when current is passed through an electrolyte, it dissociates into positive and negative ions. This is called chemical effect of electric current and was studied in detail by Michael faraday in 1933.
Current Chemical Effects Assignment Help, Current Chemical Effects Homework Help, Current Chemical Effects Tutors, Current Chemical Effects Solutions, Current Chemical Effects Tutors, Electrostatics Help, Physics Tutors, Current Chemical Effects Questions Answers