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Electrochemistry Class 12 Notes PDF
Electrochemistry Class 12 Notes PDF.Solutions are in PDF form below.
Electrochemistry Class 12 Notes
Subject | Chemistry |
Class | 12th |
How to Access the Electrochemistry Class 12 Notes PDF?
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- Select ‘Chemistry’ from the list of subjects.
- Pick ‘Electrochemistry’ from the list of chapters on the new page.
Electrochemistry Class 12 Notes PDF Summary
Electrochemistry serves as a vital branch of chemistry focused on studying chemical processes that involve the transfer of electrons between reactants. It encompasses a diverse array of phenomena
ranging from generating electrical energy in batteries and fuel cells to electrolyzing water and metal corrosion. Proficiency in electrochemistry is crucial for various practical applications, including energy storage, electroplating, sensing, and environmental remediation.
Here are the key concepts:
- Redox Reactions:
- Electrochemistry revolves around redox (reduction-oxidation) reactions, where one species undergoes oxidation by losing electrons while another undergoes reduction by gaining electrons.
- Reducing agents donate electrons and undergo oxidation, while oxidizing agents accept electrons and undergo reduction.
- Redox reactions are often represented using half-reactions, illustrating the electron transfer between reactants.
- Electrochemical Cells:
- These devices convert chemical energy into electrical energy or vice versa.
- Electrochemical cells comprise two electrodes (anode and cathode) immersed in an electrolyte solution and connected by an external circuit.
- Types include galvanic cells (producing electrical energy from spontaneous redox reactions) and electrolytic cells (utilizing electrical energy to drive non-spontaneous redox reactions).
- Electrode Potentials:
- Electrode potentials indicate the tendency of electrodes to gain or lose electrons, relative to a standard reference electrode.
- Standard electrode potentials (E°) aid in predicting the direction of redox reactions, as they are tabulated for various half-reactions.
- Electrolysis:
- Electrolysis involves using electrical energy to drive non-spontaneous redox reactions, often leading to the decomposition of compounds into their constituent elements or ions.
- It finds applications in electroplating, metal refining, and chemical production processes.
- Batteries and Fuel Cells:
- Batteries store and release electrical energy through redox reactions, with types including primary (non-rechargeable) and secondary (rechargeable) batteries.
- Fuel cells directly convert chemical energy into electrical energy by oxidizing a fuel at the anode and reducing an oxidant at the cathode.
- Corrosion:
- Corrosion is an electrochemical process wherein metals react with their environment, often facilitated by water and oxygen, leading to the formation of oxides.
- Types include galvanic corrosion and uniform corrosion, with practical implications for materials protection.
- Applications:
- Electrochemistry finds widespread use in energy storage and conversion, electroplating, sensing technologies, water treatment, and corrosion protection.
Understanding electrochemistry is pivotal for unlocking its myriad applications across diverse industries, contributing to advancements in energy, materials, and environmental technologies.