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Chemistry: The Central Science | 13th Edition | ISBN: 9780321910417 | Authors: Theodore E. Brown; H. Eugene LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward; Matthew E. Stoltzfus
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Cell Potentials under Standard Conditions

Chapter , Problem 33E

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QUESTION:

Problem 33E

Cell Potentials under Standard Conditions (Section)

(a) Write the half-reaction that occurs at a hydrogen electrode in acidic aqueous solution when it serves as the cathode of a voltaic cell. (b) Write the half-reaction that occurs at a hydrogen electrode in acidic aqueous solution when it serves as the anode of a voltaic cell. (c) What is standard about the standard hydrogen electrode?

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QUESTION:

Problem 33E

Cell Potentials under Standard Conditions (Section)

(a) Write the half-reaction that occurs at a hydrogen electrode in acidic aqueous solution when it serves as the cathode of a voltaic cell. (b) Write the half-reaction that occurs at a hydrogen electrode in acidic aqueous solution when it serves as the anode of a voltaic cell. (c) What is standard about the standard hydrogen electrode?

ANSWER:

Step 1 of 4

Standard hydrogen electrode:

It consists of a platinum wire in an inverted glass tube. Hydrogen gas is passed through the tube at 1 atm.  platinum foil is attached at the end of the wire.

The electrode is immersed in   ion solution at . The electrode potential of SHE is zero at all temperatures.

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