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General Knowledge for Competitive Examinations

General Knowledge (GK) makes Integral Part of many competitive examinations in India. The GK Test examine your awareness and abilities fr...

Monday, December 4, 2017


Electrolytes- Electrolytes are the materials which allow electric current to pass through them when in molten state and goes for chemical decomposition. For example; acids, bases, and salts.

Strong Electrolytes – These are the types of electrolytes which fully decomposes into ions in a solution. Some of the examples are – NaCl, KCl, HCl, NaOH etc

Weak Electrolytes – These electrolytes only partially dissociates in solution. For example – CH3COOOH, H2CO3, HCN, ZnCl2, NH4OH

Electrodes – In order to pass electric current through an electrolytes in molten state two rods or plates are required to connect with poles of a battery. These rods or poles are called electrodes.

Anode – The electrode attached to the positive terminal of battery is called anode.

Cathode – The electrode attached to the negative terminal of the battery is called Cathode.

Example – Electrolysis of Molten NaCl
At Anode – CL- - e ====== Cl; Cl + Cl =========== Cl2

At Cathode Na+ + e === Na

So Cl2 gas occurs at anode while Na at Cathode.