A certain metal M forms a soluble nitrate salt MNO,. Suppose the left half cell of a galvanic cell apparatus is filled with a 3.50 M solution ofMNO, and the right half cell with a 17.5 mM solution of the same substance. Electrodes made of M are dipped into both solutions and avoltmeter is connected between them. The temperature of the apparatus is held constant at 30.0 °C.leftx10Which electrode will be positive?rightWhat voltage will the voltmeter show? Assume its positive lead is connected to thepositive electrode.Be sure your answer has a unit symbol, if necessary, and round it to 2 significantdigits.

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at voltage will the voltmeter show?

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter17: Electrochemistry

Section: Chapter Questions

Problem 89AP

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Concept explainers

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.

Question

A certain metal M forms a soluble nitrate salt MNO,. Suppose the left half cell of a galvanic cell apparatus is filled with a 3.50 M solution of
MNO, and the right half cell with a 17.5 mM solution of the same substance. Electrodes made of M are dipped into both solutions and a
voltmeter is connected between them. The temperature of the apparatus is held constant at 30.0 °C.
left
x10
Which electrode will be positive?
right
What voltage will the voltmeter show? Assume its positive lead is connected to the
positive electrode.
Be sure your answer has a unit symbol, if necessary, and round it to 2 significant
digits.

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