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Mindmap: Electrochemistry | Chemistry Class 12 - NEET

The document Mindmap: Electrochemistry | Chemistry Class 12 - NEET is a part of the NEET Course Chemistry Class 12.
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FAQs on Mindmap: Electrochemistry - Chemistry Class 12 - NEET

1. What is electrochemistry?
Ans. Electrochemistry is a branch of chemistry that deals with the study of the relationship between electrical energy and chemical reactions. It involves the interaction between an electric current and chemical changes, particularly in redox (reduction-oxidation) reactions.
2. How does electrochemical cell work?
Ans. An electrochemical cell consists of two electrodes (anode and cathode) immersed in an electrolyte solution. The anode undergoes oxidation, releasing electrons, while the cathode undergoes reduction, accepting electrons. This electron flow creates an electric current, allowing a chemical reaction to occur at each electrode.
3. What is the significance of electrolytes in electrochemistry?
Ans. Electrolytes are substances that conduct electricity when dissolved in a solvent. In electrochemistry, electrolytes are essential as they facilitate the movement of ions between the electrodes, completing the circuit and allowing the flow of electrical current. Without electrolytes, electrochemical reactions would not occur.
4. How can electrochemical cells be used in practical applications?
Ans. Electrochemical cells find numerous practical applications, such as in batteries and fuel cells. Batteries store electrical energy chemically and convert it back to electrical energy when needed. Fuel cells, on the other hand, directly convert chemical energy from a fuel into electrical energy. These applications have significant implications in powering electronic devices, vehicles, and even large-scale energy storage systems.
5. What is the difference between galvanic cells and electrolytic cells?
Ans. Galvanic cells, also known as voltaic cells, are spontaneous electrochemical cells that convert chemical energy into electrical energy. They generate an electric current through a redox reaction occurring spontaneously. In contrast, electrolytic cells require an external electric current to drive a non-spontaneous chemical reaction. They are commonly used for electroplating, electrolysis, and other industrial processes.
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