3.1 Ion selective Potentiometry

Dnyanasadhana College, Thane. Department of Chemistry M.Sc. Analytical Chemistry Sem -II Ion selective Potentiometry. 3.1 Ion selective Potentiometry. Solid state, precipitate, liquid –liquid, enzyme and gas sensing electrodes with applications,

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Potentiometry

Potentiometry. Potential measurements of electrochemical cells Ion selective methods Reference electrode Indicator electrode Potential measuring device Reference electrode Indicator electrodes Ion specific electrodes Potentiometric measurements. Reference electrode. Known half-cell

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Electrodes and Potentiometry

Electrodes and Potentiometry. Introduction 1.) Potentiometry Use of Electrodes to Measure Voltages that Provide Chemical Information Various electrodes have been designed to respond selectively to specific analytes. Use a Galvanic Cell Unknown solution becomes a ½-cell

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Experiment 7 Potentiometric Titration

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Potentiometry and the Detection of Fluoride

Potentiometry and the Detection of Fluoride . pH Meter. pH meters use a ion selective glass electrode: Thin glass membrane connects sample with a reference solution Glass membrane typically made of silica Potential difference builds across membrane

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potentiometry

potentiometry. Physicochemical method that measure certain electron property of substances which is proportional to its concentration. In analysis we have electrochemical method. Ex. Potentiometry Polarography Electrophoresis Conductometry.

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Analytical Electrochemistry : Potentiometry

Analytical Electrochemistry : Potentiometry. Introduction Goals and Objectives Potentiometry Timeline Potentiometric Theory Instrumentation pH Electrodes Experiments Common Troubleshooting Tips References. Introduction

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POTENTIOMETRY 9 th lecture

POTENTIOMETRY 9 th lecture. Salt bridge. Pt black Catalyst. 4‑ Electrodes for Neutralization Reactions: a‑ The Hydrogen gas Electrode: Electrode reaction: H + + e ½ H 2 Mode of action: electron transfer electrode Nernst equation:

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Potentiometric Methods

Potentiometric Methods. A.) Introduction : 1.) Potentiometric Methods: based on measurements of the potential of electrochemical cells in the absence of appreciable currents (i . 0) 2.) Basic Components: a) reference electrode: gives reference for potential measurement

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Potentiometric Methods

Potentiometric Methods. A.) Introduction : 1.) Potentiometric Methods: based on measurements of the potential of electrochemical cells in the absence of appreciable currents (I →0 ) 2.) Basic Components: a) reference electrode: gives reference for potential measurement

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Summary of Potentiometry : pH and Ion Selective Electrodes Potentiometric Sensors

Summary of Potentiometry : pH and Ion Selective Electrodes Potentiometric Sensors I = controlled at 0 Amps E eq is measured In general E eq = const – 0.0592 log a X. Electrode Potentials (review). Electrochemical cell – two half cells Convention, write both as reductions

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POTENTIOMETRY 8 th lecture

POTENTIOMETRY 8 th lecture. Potentiometry : Is a method of analysis in which we determine the concentration of an ion or a substance by dipping a suitable sensor in its solution ( indicator electrode ).

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Potentiometry

Potentiometry. Potentiometry. Ecell=ERt-ELf. Eleft= E0+0.0591/n log OX/RED. Eright= E0+0.0591/n log OX/RED. Types Of Electrodes. Reference Electrode. Indicator Electrode. Reference Electrodes. Primary. Secondary. NHE PPE SHE. Ag/AgCl/Cl -. SCE. Electrode of 1st Kind.

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Potentiometry

Potentiometry. Dr Hisham E Abdellatef 2010. It is a method of analysis in which we determine the concentration of an ion or substance by measuring the potential developed when a sensitive electrode is immersed in the solution of the species to be determined. M o = M n+ + ne

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Experiment 7 Potentiometric Titration

Experiment 7 Potentiometric Titration. Valdosta State University. Purpose. To accurately determine the molar mass and pK a of an unknown weak acid. Valdosta State University. Background. In this experiment, the pH of a solution will be measured directly as the sodium hydroxide is added.

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A Seminar on Potentiometric and Diazotization Titrations

A Seminar on Potentiometric and Diazotization Titrations. By Rojison Koshy, Dept. of Pharmaceutical Analysis The Erode College of Pharmacy. Diazotization Titrations. Aromatic primary amines react with sodium nitrite in acidic solutions to form diazonium salts.

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Albumin Analysis by Potentiometric Method

Albumin Analysis by Potentiometric Method. Results. 上次開會的建議. 量測電極吸附的飽和量： 測試 DMAPMA:TEGDMA=1:10 :. Table  Adsorption degree of eluted solution of albumin MIP electrode detected by UV/Vis Detecting wavelength: 250 nm. Adsorption degree. Sample No. 1. 0.002. 2. 0.000. 3. 0.001. 4.

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Redox Titrimetry and Potentiometry

Redox Titrimetry and Potentiometry. Redox Titrations. Titrate 50.0mL of 0.050 M Fe 2+ vs 0.100M Ce 4+ How do we observe the end point? Is the equilibrium constant large enough? To Observe End Point:. Redox Titrations Titrate 50.0 mL 0.050 M Fe 2+ vs 0.100 M Ce 4+.

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potentiometry

principles of potentiometry

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Electrodes and Potentiometry

Electrodes and Potentiometry. Introduction 1.) Potentiometry Use of Electrodes to Measure Voltages that Provide Chemical Information Various electrodes have been designed to respond selectively to specific analytes. Use a Galvanic Cell Unknown solution becomes a ½-cell

1.58k views • 8 slides