Consider the following statements as they apply to electrodes used in potentiometry. Decide if each is true or false. True - Potentiometry is a technique in which only a very low current flows through the working electrode. True - A selectivity ratio of zero means that there is no interference from a particular ion. False A saturated calomel electrode (SCE) is a common reference electrode that contains mercurous chloride, liquid mercury, and a saturated solution of KCI. False A Ag/AgCl reference electrode can be used at temperatures higher than 60 °C whereas calomel electrodes cannot. False A "combination" ion selective electrode (ISE) is a special electrode that measures more than one metal at a time.

Consider the following statements as they apply to electrodes used in potentiometry. Decide if each is true or false. True - Potentiometry is a technique in which only a very low current flows through the working electrode. True - A selectivity ratio of zero means that there is no interference from a particular ion. False A saturated calomel electrode (SCE) is a common reference electrode that contains mercurous chloride, liquid mercury, and a saturated solution of KCI. False A Ag/AgCl reference electrode can be used at temperatures higher than 60 °C whereas calomel electrodes cannot. False A "combination" ion selective electrode (ISE) is a special electrode that measures more than one metal at a time.

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter11: Dynamic Electrochemistry

Section: Chapter Questions

Problem 10P

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The following data were obtained with a cadmium-selective solid-state electrode. The ionic strength of each solution was 0.30 M, and the reference electrode was a saturated calomel electrode. Determine the concentration of the unknown cadmium ion in the sample. [Cd2+], M 1.00x10-1 8.75x10-3 1.00x10-3 3.16x10-5 3.16x10-6 Unknown E, V -0.115 -0.150 -0.175 -0.213 -0.242 -0.200
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