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What is Electrolysis? Video Lecture | Science Class 8
FAQs on What is Electrolysis? Video Lecture - Science Class 8
| 1. What is electrolysis? |  |
Ans. Electrolysis is a chemical process that uses an electric current to drive a non-spontaneous chemical reaction. It involves the decomposition of a compound into its respective elements or ions using electricity.
| 2. How does electrolysis work? | |
Ans. Electrolysis works by passing an electric current through an electrolyte, which is a substance that conducts electricity. When the current is applied, positive ions move towards the negative electrode (cathode) while negative ions move towards the positive electrode (anode). At the electrodes, the ions gain or lose electrons, resulting in the desired chemical reaction.
| 3. What is the purpose of electrolysis? | |
Ans. The purpose of electrolysis is to carry out various chemical reactions that are not thermodynamically favorable under normal conditions. It is commonly used in industrial processes such as electroplating, metal extraction, water splitting, and the production of chemicals like chlorine and hydrogen.
| 4. What are some applications of electrolysis? | |
Ans. Electrolysis has several applications, including electrorefining of metals, electroplating of objects with a thin layer of metal, production of chlorine gas and sodium hydroxide, water electrolysis for hydrogen production, and in certain medical and cosmetic procedures for hair removal or tattoo removal.
| 5. What are the advantages and disadvantages of electrolysis? | |
Ans. The advantages of electrolysis include its ability to carry out specific chemical reactions, its wide range of applications, and its efficiency in certain processes. However, electrolysis also has some disadvantages such as high energy consumption, the need for specialized equipment, and the potential for corrosion or damage to electrodes.
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