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Chapter 21: Q21.35 P (page 974)

How is a standard reference electrode used to determine unknownEo half-cell values?

Short Answer

Expert verified

The Standard Hydrogen Electrode (SHE) with Eohalf-cell = 0.0 is the standard reference electrode.

Step by step solution

01

Definition of standard reference electrode

An electrode with a known electrical potential is referred to as a standard reference electrode. The most typical application of a standard reference electrode is to determine the potential of another material in an electrochemical cell.

02

Determining the unknown  Eo half-cell values

The Standard Hydrogen Electrode (SHE) with Eohalf-cell = 0.0 is the standard reference electrode. The SHE is assigned a value greater than O when electrodes force it to serve as an anode. SHE is given a value smaller than when electrodes force her to operate as a cathode

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Most popular questions from this chapter

In a concentration cell, is the more concentrated electrolyte in the cathode or the anode compartment? Explain.

Consider the following voltaic cell

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(g) Suggest a solution for the cathode electrolyte.

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(i) For which electrode could you use an inactive material?

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A voltaic cell with Ni/Ni2and Co/C half-cells has the following initial concentrations[Ni2 +]= 0.80M;[Co2 +]=0.20M.

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When a clean iron nail is placed in an aqueous solution of copper(II) sulfate, the nail becomes coated with a brownish black material.

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Compare and contrast a voltaic cell and an electrolytic cell with respect to each of the following:

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(c) Nature of the half-reaction at the cathode

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(e) Electrode from which electrons leave the cell
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