Basic Concepts in Electrochemistry
1Basic Concepts in Electrochemistry2Electrochemical CellElectronsCurrent+-ANODECATHODECurren tVoltage Source3Fuel CellElectrons (2 e)Current-+ANODECATHODECurrentElectrical LoadH22H++ 2e O2+ 2H++ 2e H2O4Electrolysis CellElectrons (2 e)Current+-ANODECATHODECurrentVoltage Source2 H+; SO4 2-H2O O2+ 2H++ 2e2H++ 2e H25What is Electrochemistry ? Electrochemistry is defined as the branch of chemistry that examines the phenomena resulting from combined chemical and electrical of processes This field covers:-Electrolytic processes: Reactions in which chemical changes occur on the passage of an electrical current -Galvanic or Voltaic processes: Chemical reactions that result in the production of electrical energy 7Electrochemical cellAn electrochemical cell typically consists of:-Two electronic conductors (also called electrodes) -An ionic conductor (called an electrolyt)
5 What is electrochemistry? Electrochemistry is defined as the branch of chemistry that examines the phenomena resulting from combined chemical and electrical effects.
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