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A voltaic cell designed to measure [Cu2+] is constructed

Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro ISBN: 9780321809247 1

Solution for problem 130E Chapter 18

Chemistry: A Molecular Approach | 3rd Edition

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Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Chemistry: A Molecular Approach | 3rd Edition

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Problem 130E

A voltaic cell designed to measure [Cu2+] is constructed of a standard hydrogen electrode and a copper metal electrode in the Cu2+ solution of interest. If you want to construct a calibration curve for how the cell potential varies with the concentration of copper(II), what do you plot in order to obtain a straight line? What is the slope of the line?

Step-by-Step Solution:
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Electrochemistry Redox reaction- Many biological processes ↳Reduction and Oxidation- Movement of electron from one species to another + A → A​ Oxidation: Loss of election A reduced B, A is the reducing Reduction: Gain of electron agent. B oxidized A B → B​- Oxidation Is Loss Reduction Is Gain--OILRIG to remember +​ 2+​ Zn(s) +2 H​ (aq)→Zn​ (aq) + H​ (g) 2​ Zinc loses e Hydrogen gained e Oxidized. Reducing agent Reduced, Oxidizing agent H​ + F​ →2HF Molecular 2​ 2​ ↳Need oxidation numbers. Oxidation numbers/states-​ Not the actual charge, Hypothetical Rules -Atoms in elemental form= oxidation number is 0 -Solid metals number is 0 -Any monatomic ion the number= the charge -Nonmetals usually have negative oxidation numbers -Oxygen is usually -2 except with H​ O​ and with F 2​ 2 ​ -Hydrogen is -1 with metals and +1 with nonmetals -Fluorine is -1 -neutral compounds oxidation levels add up to 0 Half Reduction Method -Balance for different ions separately, combine at end. Keep # of e lost equal to gained -Steps must be followed Cu S(s) + NO​ (aq)→Cu​ (aq) + SO​ (aq)+NO(g)2-​ 3​ 4​ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓

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Chapter 18, Problem 130E is Solved
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Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

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A voltaic cell designed to measure [Cu2+] is constructed