27 What is reant by electroy's? Explain electorysis of
diagram
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Answers
Answer:
Electrolysis is the process of decomposing an electrolyte by passing electricity through its aqueous solution or molten state.
The process of electrolysis is carried out in an electrolytic cell. In a glass vessel, the electrolyte (acid, base or salt) is taken in its aqueous solution or molten form. Two metal rods are dipped in water, one rod is connected to the negative pole of the battery and is called cathode whereas the other metal rod is connected to the positive pole of the battery and is called anode. These metal rods are called electrodes.
When an electrolyte is dissolved in water or taken in its molten state, it dissociates to form positively and negatively charged ions. When electric current is passed, the negatively charged ions (called anions) move towards anode and positively charged ions (cations) move towards cathode. Once the ions reach their respective electrodes, they lose their charge to become neutral species. Cations accept electrons to become neutral whereas anions give electrons to become neutral.
Electrolysis has many uses. They are:
- Producing hydrogen by the electrolysis of water
- Electrolytic extraction of metals like sodium, potassium, magnesium, calcium etc.
- Manufacture of heavy water
- Electroplating of metals
Electrolysis of water:
Electrolysis of water means passing electric current through water to decompose it into hydrogen gas and oxygen gas.
Explanation:
