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PYQs: Electrochemistry Video Lecture | Physical Chemistry

FAQs on PYQs: Electrochemistry Video Lecture - Physical Chemistry

1. What is electrochemistry?

Ans. Electrochemistry is the branch of chemistry that deals with the study of the relationship between electricity and chemical reactions. It involves the use of electrodes and an electrolyte to facilitate chemical reactions and the conversion of chemical energy into electrical energy, or vice versa.

2. What is an electrolyte in electrochemistry?

Ans. An electrolyte in electrochemistry is a substance that can conduct electricity when dissolved in a solvent or in molten form. It consists of ions that are free to move and carry electric charge. Common examples of electrolytes include acids, bases, and salts.

3. What are some applications of electrochemistry?

Ans. Electrochemistry has numerous applications in various fields. Some common applications include: - Electroplating: The process of depositing a layer of metal onto a surface using an electric current. - Batteries: Electrochemical cells that convert chemical energy into electrical energy for portable devices. - Corrosion prevention: Electrochemical methods are used to protect metals from corrosion. - Fuel cells: Devices that convert chemical energy from fuel into electrical energy through electrochemical reactions.

4. What is the difference between oxidation and reduction in electrochemistry?

Ans. Oxidation and reduction are two half-reactions that occur simultaneously in electrochemical reactions. In oxidation, a species loses electrons, whereas in reduction, a species gains electrons. Oxidation is often associated with the loss of hydrogen or gain of oxygen, while reduction is associated with the gain of hydrogen or loss of oxygen.

5. What is an electrochemical cell?

Ans. An electrochemical cell is a device that converts chemical energy into electrical energy or vice versa through redox reactions. It consists of two half-cells, each containing an electrode and an electrolyte. The two half-cells are connected by a conductive pathway, allowing the flow of electrons and ions. Examples of electrochemical cells include batteries, fuel cells, and electrolysis cells.

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Oct 06, 2025 Last updated

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