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Electrochemistry Class 12 Notes Handwritten
Electrochemistry Class 12 Notes Handwritten. Solutions are in PDF form below.
Electrochemistry Class 12 Notes Handwritten Summary
Electrochemistry is a field of science that looks at how chemical reactions that involve electrons moving from one material to another work. This area combines the study of electricity and chemistry and is very important for many things we use daily like batteries,
making metals resistant to rust, and creating ways to store and convert energy. At its core, electrochemistry wants to understand how we can turn chemical energy into electrical energy and back again.
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Electrochemistry Class 12 Basic Ideas:
- Redox Reactions: These are reactions where atoms or molecules either lose or gain electrons, changing their oxidation state. Losing electrons is called oxidation, and gaining electrons is called reduction.
- Electrochemical Cells: These devices can either make electrical energy from chemical reactions (like in batteries) or use electricity to cause chemical reactions (used in metal coating or splitting water). Galvanic cells change chemical energy into electrical energy, and electrolytic cells do the opposite.
- Electrodes and Electrolytes: Electrodes (made of conductive materials) are where electrons go in or out of the cell. The anode is for oxidation and the cathode for reduction. Electrolytes are substances that carry ions and can be liquid or solid, helping electric current move between electrodes.
- Standard Electrode Potentials: This is a way to measure how likely electrons are to move in these reactions, compared against a standard reference, helping predict the flow of electrons.
- Nernst Equation: This formula helps figure out the electrical potential of a reaction by considering the temperature and the amount of reactants and products involved.
Electrochemistry Class 12 Main Uses:
- Batteries and Fuel Cells: These devices, essential for gadgets, electric cars, and storing clean energy, rely on electrochemistry.
- Corrosion Prevention: By understanding these processes, we can stop metals from deteriorating when exposed to their environment.
- Electroplating: This technique coats one metal with another to decorate, prevent rust, or improve electrical conductivity and durability.
- Sensors: Electrochemistry helps make sensors that can detect things like pH levels, oxygen, or glucose in the blood.
- Water Treatment: It’s used to clean water and wastewater, breaking down harmful substances and disinfecting water.
Electrochemistry Class 12 Imp. Points
- Electrochemistry connects electrical energy with chemical reactions, especially those involving electron exchange.
- It covers the study of reactions that change oxidation states, how electrochemical cells work, the role of electrodes and electrolytes, understanding electron flow, and calculating potentials with the Nernst equation.
- Its applications are broad, affecting energy storage and conversion, fighting corrosion, metal coating, making sensors, and cleaning water.
- This field is key for progress in sustainable energy, environmental care, and creating new materials and technologies, bridging the gap between chemistry and electrical engineering by focusing on electron movement in chemical processes.
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