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Electrochemistry - 1 Video Lecture | Crash Course for IIT JAM Chemistry
FAQs on Electrochemistry - 1 Video Lecture - Crash Course for IIT JAM Chemistry
| 1. What is electrochemistry? |  |
Ans. Electrochemistry is a branch of chemistry that deals with the study of the interchange of chemical energy and electrical energy during redox reactions. It involves the use of electrodes and electrolytes to facilitate the movement of electrons and ions.
| 2. What are the applications of electrochemistry? | |
Ans. Electrochemistry has numerous applications in various fields. It is used in batteries and fuel cells for energy storage and conversion. It is also applied in corrosion prevention, electroplating, wastewater treatment, and analytical techniques such as voltammetry and potentiometry.
| 3. How does electrochemical cell work? | |
Ans. An electrochemical cell consists of two half-cells connected by a conductive pathway. In one half-cell, oxidation occurs, releasing electrons, while in the other half-cell, reduction occurs, accepting electrons. The flow of electrons through the external circuit generates an electrical current, allowing the redox reaction to proceed.
| 4. 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 produce a positive voltage and can be used as batteries. On the other hand, electrolytic cells require an external power source to drive a non-spontaneous redox reaction. They are used for processes like electroplating.
| 5. How are electrode potentials measured? | |
Ans. Electrode potentials are measured using a standard hydrogen electrode (SHE) as a reference. The electrode in question is connected to the SHE, and the potential difference between them is measured using a voltmeter. The standard electrode potential is the potential difference between the electrode and SHE under standard conditions.
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