ELECTRO CHEMISTRY l electrolytic cell std 12 lec 1
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This document discusses electrochemistry and different types of electrochemical cells. It explains that in an electrolytic cell, electrical energy is used to drive a non-spontaneous redox reaction to produce a chemical energy output. The cathode is where reduction occurs through electron gain, and the anode is where oxidation occurs through electron loss. An electrolytic solution contains molecules bound by ionic bonds that allow conduction when an electrical current is applied to the cell.
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1. Redox reactions involve the transfer of electrons between chemical species and can be monitored by measuring electric current.
2. A redox titration uses the transfer of electrons between analyte and titrant for analytical purposes. Reduction occurs when a substance gains electrons and oxidation occurs when a substance loses electrons.
3. Galvanic cells use spontaneous redox reactions to generate electricity by separating the half-cell reactions and allowing electrons to flow through an external circuit.
chapter-14.ppt
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2. Key concepts covered include how redox reactions involve the transfer of electrons between oxidizing and reducing agents, and how this electron transfer can be harnessed to produce electric currents in batteries and cells.
3. The Nernst equation is introduced to calculate cell potentials under non-standard conditions when concentrations vary from standard values. This allows electrochemical cells to be used as probes of chemical equilibria.
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Electrochemistry, electrophoresis, ise
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This document provides an overview of electrochemical energy sources and fuel cells. It discusses the concepts of electrochemistry including electrical conduction, measurement of conductance, and types of electrochemical cells. It describes galvanic cells and how they generate electrical energy from chemical reactions. It also covers different types of batteries including primary batteries like dry cells and secondary rechargeable batteries like lead-acid and nickel-cadmium cells. Finally, it provides details on the working principles of hydrogen fuel cells and their use in generating electricity.
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Introduction – cells – types - representation of galvanic cell - electrode potential - Nernst equation (derivation of cell EMF) - calculation of cell EMF from single electrode potential - reference electrode: construction, working and applications of standard hydrogen electrode, standard calomel electrode - glass electrode – EMF series and its applications - potentiometric titrations (redox) - conductometric titrations - mixture of weak and strong acid vs strong base.
Dhaka | Aug-15 | A Study on Electrochemistry of PKL (Pathor Kuchi Leaf) Elect...
Mohammad Al Mamun, Assistant Professor, Department of Chemistry, Jagannath University
As part of the series of regional engagements in South Asia, Smart Villages is organising a workshop on off-grid rural energy provision in Bangladesh. The country has the fastest growing programme in the world with an estimated 70,000 solar home systems (SHS) installed per day. More than 3 million SHS have been installed in off-grid rural areas in the country bringing electricity to an estimated 13 million people.
The aim of the workshop is to gain insights from the experience of a wide variety of stakeholders in Bangladesh who are involved in rural off-grid energy provision in the country. This workshop will offer a number of potential lessons to other countries within the region. The workshop provides an opportunity to gain a deeper understanding of the opportunities presented by expansion of solar home systems (SHS) and mini-grids to off-grid rural communities and the challenges faced in this expansion. During this workshop we will also investigate the potential impact of energy access on rural livelihoods in the country.
The workshop is being jointly organised by Smart Villages and Practical Action.
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- 2. Electrochemistry CATHODE – WHERE REDUCTION OCCURS ANODE – WHERE OXIDATION OCCURS
- 3. Electro - chemistry ELECTRICAL ENERGY CHEMICAL ENERGY ELECTRICAL ENERGY CHEMICAL ENERGY ELECTROLYTIC CELL ELECTRICAL ENERGY CHEMICAL ENERGY GALVANIC CELL ELECTROCHEMISTRY ELECTROLYTIC CELL GALVANIC CELL CONDUCTION OF SOLUTION
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