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A Cheap, Semiquantitative Hand-Held Conductivity Tester
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Abstract
This article describes the construction and use of a simple hand-held conductivity tester which gives roughly quantitative results when solutions ranging in electrolyte concentration from 0.001 to 0.10 M are tested. The tester uses a bar-graph LED driven by an LM3914 IC and is powered by a single 9V battery. This tester can be constructed from parts available at Radio Shack stores for about $10 using a soldering iron and a few other tools.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Domain):
Analytical ChemistryKeywords (Feature):
Inventory ControlKeywords (Subject):
ConductivityCiting Articles
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This article has been cited by 8 ACS Journal articles (5 most recent appear below).
Charge Density Quantification of Polyelectrolyte Polysaccharides by Conductometric Titration: An Analytical Chemistry Experiment
Stefano Farris, Luigi Mora, Giorgio Capretti, and Luciano PiergiovanniJournal of Chemical Education2012 89 (1), 121-124Charge Density Quantification of Polyelectrolyte Polysaccharides by Conductometric Titration: An Analytical Chemistry Experiment
Stefano Farris, Luigi Mora, Giorgio Capretti, and Luciano PiergiovanniJournal of Chemical Education2012 89 (1), 121-124An easy analytical method for determination of the charge density of polyelectrolytes, including polysaccharides and other biopolymers, is presented. The basic principles of conductometric titration, which is used in the pulp and paper industry as well as ...
Conductimetric Titrations: A Predict−Observe−Explain Activity for General Chemistry
K. Christopher Smith, Etinosa Edionwe, and Bayyinah MichelJournal of Chemical Education2010 87 (11), 1217-1221Conductimetric Titrations: A Predict−Observe−Explain Activity for General Chemistry
K. Christopher Smith, Etinosa Edionwe, and Bayyinah MichelJournal of Chemical Education2010 87 (11), 1217-1221A predict−observe−explain framework is used to explore conductimetric titrations of a hydrochloric acid−sodium hydroxide (strong acid−strong base) and an acetic acid−sodium hydroxide (weak acid−strong base) system in which all components are soluble. In ...
Effectiveness of a MORE Laboratory Module in Prompting Students To Revise Their Molecular-Level Ideas about Solutions
Lydia T. Tien , Melonie A. Teichert and Dawn RickeyJournal of Chemical Education2007 84 (1), 175Effectiveness of a MORE Laboratory Module in Prompting Students To Revise Their Molecular-Level Ideas about Solutions
Lydia T. Tien , Melonie A. Teichert and Dawn RickeyJournal of Chemical Education2007 84 (1), 175This study investigates the effectiveness of a Model–Observe–Reflect–Explain (MORE) laboratory module in prompting three different populations of general chemistry students (honors students at a research university, chemistry majors at a primarily ...
Low-Voltage Conductivity Device: Editor's Note about Using Conductivity Devices in Nonaqueous Solutions
Ed Vitz and Melissa KistlerJournal of Chemical Education2004 81 (1), 63Low-Voltage Conductivity Device: Editor's Note about Using Conductivity Devices in Nonaqueous Solutions
Ed Vitz and Melissa KistlerJournal of Chemical Education2004 81 (1), 63A conductivity demonstration device is described which operates on 12V and yet will illuminate a bulb brightly enough for use in a lecture hall, even when used with solutions of low conductivity.
Using Conductivity Devices in Nonaqueous Solutions I: Demonstrating the SN1 Mechanism
Beth Ann Hill , Thomas A. Newton , John OlsonJournal of Chemical Education2004 81 (1), 58Using Conductivity Devices in Nonaqueous Solutions I: Demonstrating the SN1 Mechanism
Beth Ann Hill , Thomas A. Newton , John OlsonJournal of Chemical Education2004 81 (1), 58The use of a conductivity apparatus in nonaqueous solutions to demonstrate structure–reactivity correlations and solvent effects in the SN1 reaction is described.
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- Received: August 03, 2009
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