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Chapter 22 – Introduction to Electroanalytical Chemistry

Chapter 22 Introduction to Electroanalytical Chemistry Electroanalytical methods are a class of techniques in analytical Chemistry , which study an analyte by measuring the potential (volts) and/or current (amperes) in an electrochemical cell containing the analyte. The three main categories are potentiometry (the difference in electrode potentials is measured), coulometry (the cell's current is measured over time), and voltammetry (the cell's current is measured while actively altering the cell's potential). Read: pp. 628-653 Problems: 2,3,8,9 Electroanalytical Measurements Electrochemical (analytical measurements) are heterogeneous in nature.

• Electroanalytical methods are a class of techniques in analytical chemistry, which study an analyte by measuring the potential (volts) and/or current (amperes) ... separation! Ions move in the presence of an electric field. 1:1 electrolytes are ... mass transport resistance and solution ohmic resistance. E cell = E cathode – E anode

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