Explanation Copper is plated on cathode, so the cathode half-reaction is as follows: C u 2 + ( a q ) + 2 e − → C u ( s ) The stoichiometric relationship between the moles of electrons and the moles of Cu is 2 m o l e − : 1 m o l C u Mass of Copper (Cu) is 111 g and current 3.8 A. We know that 1 A = 1 C / s , 1 g = 1000 m g a n d m o l a r m a s s o f C u = 63.55 g / mol . You need to find the time for plating Cu at cathode. To solve this problem, begin with the mass of Cu in milligrams converted to grams, then convert grams to moles of Cu by the use of molar mass of Cu and then convert moles of Cu to the number of electrons that have flowed through the cell. Now, use Faraday’s constant to find the number of coulombs. Then, since current is the charge per unit time, use this to find time (in second). The conceptual plan is m g → g → m o l C u → m o l e − → C → S 1 g C u 1000 m g C u 1 g C u 63

Modified Mastering Chemistry with Pearson eText -- Standalone Access Card -- for Chemistry: A Molecular Approach (4th Edition)

4th Edition

ISBN: 9780134162430

Author: Nivaldo J. Tro

Publisher: PEARSON

See similar textbooks

Videos

Question

Chapter 19, Problem 14SAQ

Interpretation Introduction

Interpretation: The time required to plate 111 mg of copper on to the cathode of an electrolytic cell containing CuCl₂(aq) is o be calculated.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 19, Problem 13SAQ

Chapter 19, Problem 15SAQ

Students have asked these similar questions

The statements in the tables below are about two different chemical equilibria. The symbols have their usual meaning, for example AG stands for the standard Gibbs free energy of reaction and K stands for the equilibrium constant. In each table, there may be one statement that is faise because it contradicts the other three statements. If you find a false statement, check the box next to t Otherwise, check the "no false statements" box under the table. statement false? AG"1 no false statements: statement false? AG-0 0 InK-0 0 K-1 0 AH-TAS no false statements 2

Complete the following esterification reactions by drawing the line formulas of the carboxylic acid and alcohol required to form the ester shown. catalyst catalyst catalyst apricot fragrance

Show the saponification products of the following ester: You don't need to draw in the Na+ cation. catalyst, A catalyst, A catalyst, A

Chapter 19 Solutions

Modified Mastering Chemistry with Pearson eText -- Standalone Access Card -- for Chemistry: A Molecular Approach (4th Edition)

Ch. 19 - Prob. 1SAQ Ch. 19 - Q2. Which statement is true for voltaic cells? a)...Ch. 19 - Prob. 3SAQ Ch. 19 - Prob. 4SAQ Ch. 19 - Prob. 5SAQ Ch. 19 - Prob. 6SAQ Ch. 19 - Prob. 7SAQ Ch. 19 - Prob. 8SAQ Ch. 19 - Prob. 9SAQ Ch. 19 - Prob. 10SAQ

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

The time required to plate 111 mg of copper on to the cathode of an electrolytic cell containing CuCl 2 (aq) is o be calculated.

Videos

Interpretation: The time required to plate 111 mg of copper on to the cathode of an electrolytic cell containing CuCl2(aq) is o be calculated.

Want to see the full answer?

Chapter 19 Solutions

Interpretation: The time required to plate 111 mg of copper on to the cathode of an electrolytic cell containing CuCl₂(aq) is o be calculated.