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. These methods can be broken down into several categories depending on which aspects of the cell are controlled and which are measured. The three main categories are: 1. Potentiometry :the difference in electrode potentials is measured. 2. Coulometry :the cell's current is measured over time, 3. Voltammetry :the cell's current is measured while actively altering the cell's potential. Potentiometric analysis-1 What is potentiometric analysis? What are the types ...
PRECIPITATION TITRATION: It is a titration in which precipitates are formed. One of the reacting species is coverted into a precipitate. Example: Estimation of chloride using AgNo3. Here Agcl is precipitated. cl-+ AgNO -------------- Agcl + No - 3 3 Explanation: When chloride solution is titrated against AgNo3chloride ions are precipitated as Agcl. Such a titration is known as precipitation titrations. Principle: In precipitation titrations the formation of precipitates is used as the basis of the titration.The point at which as stoichiometric amount of the titrant is added to precipitate completely the ion to be estimated presented in a ...
REDOX AND POTENTIOMETRIC TITRATIONS :WE WILL LEARN FROM THIS CHAPTER Balancing redox reactions Calculating the reaction equilibrium constant from standard potentials Calculating redox titration curves Redox indicators Iodimetry and iodometry Preparing the analyte for titration Potentiometric titrations Derivative titrations—using spreadsheets for plotting Gran plots First: Balance the Reduction–Oxidation Reaction 14.1 The calculations redox reaction There are various ways of balancing redox reactions. Use the method you are most . comfortable with Calculation of the Equilibrium Constant of a 14.2 Reaction— Needed to Calculate Equivalence Point Potentials At the equivalence point, we have unknown concentrations that must be ...
Agenda 2 • Introduction • Problem Definition • Materials and Methods Potentiometric titration (surfactant), Colorimetric Measurement (polyacrylate) • Results and Discussions Polyacrylate vs. different chemicals for Reducing Adsorption of Surfactant Polyacrylate and Sodium Carbonate on Different Outcrop Minerals Sodium Polyacrylate for Reducing Adsorption of different Surfactants Effect of Molecular Weight of Sodium Polyacrylate on its Sacrificial Property • Conclusions • Future Work 3 Introduction Why is Surfactant Adsorption 4 important? • Enhanced Oil Recovery (EOR) • Surfactant Adsorption & EOR Economy of Surfactant Injection Chromatographic Separation Wettability Alteration 5 Problem Definition Anhydrite reacts with Sodium 6 Carbonate • Sodium ...
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