A sample of zinc corrodes uniformly with a current density of 4.2 x 10® A/cm´ in an aqueous solution. (a) What is the corrosion rate of zinc in mg/dm/day? (b) What is the corrosion rate of zinc in mm/year? (a) Given current density, i = 4.2 x 10° A/cm? density, ame p= 7.1 g/cm3, n=2, F = 96 500 coulombs/mole. zinc atomic weight, M = 65.38 g/mol,

A sample of zinc corrodes uniformly with a current density of 4.2 x 10® A/cm´ in an aqueous solution. (a) What is the corrosion rate of zinc in mg/dm/day? (b) What is the corrosion rate of zinc in mm/year? (a) Given current density, i = 4.2 x 10° A/cm? density, ame p= 7.1 g/cm3, n=2, F = 96 500 coulombs/mole. zinc atomic weight, M = 65.38 g/mol,

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.

Question

Example 5
A sample of zinc corrodes uniformly with a current density of 4.2 x 10°
solution.
(a) What is the corrosion rate of zinc in mg/dm/day?
(b) What is the corrosion rate of zinc in mm/year?
(a) Given current density, i = 4.2 x 10° A/cm²
density,
amed
p=7.1 g/cm3, n= 2, F = 96 500 coulombs/mole.
zinc atomic weight, M = 65.38 g/mol,

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