🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
Chemistry
9
answers
1
watching
523
views
14 Sep 2018

87. Determine whether or not each metal, if coated onto iron, would prevent the corrosion of iron. a. Zn b. Sn c. Mn

word_media_image1.png
Watch
9
answers
1
watching
523
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
Already have an account? Log in
Share
Already have an account? Log in
Share
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Casey Durgan
Casey DurganLv2
14 Sep 2018
Already have an account? Log in
Share
discord banner image
Join us on Discord
Chemistry Study Group
Join now

Related textbook solutions

Basic Chemistry
5 Edition,
Timberlake
ISBN: 9780134138046
Principles of Chemistry Molecular Approach
4th Edition,
Tro
ISBN: 9780134112831
Chemistry: Structure and Properties
2nd Edition,
Tro
ISBN: 9780134293936
Principles of Chemistry Molecular Approach
3rd Edition, 2014
Tro
ISBN: 9780321971944
Chemistry: A Molecular Approach
3rd Edition,
Tro
ISBN: 9780321809247
Chemistry: A Molecular Approach
5th Edition,
Tro
ISBN: 9780134874371
Principles of Chemistry: A Molecular Approach
4th Edition,
Tro
ISBN: 9780134895741
Chemistry: The Central Science
14th Edition, 2017
Brown
ISBN: 9780134414232

Related questions

Which metal(s), if coated onto iron, would prevent the corrosion of iron? Cr, Mg or Cu?

Standard Electrode Potentials at 25 ∘C
Reduction Half-Reaction E∘(V)
Fe2+(aq)+2e− →Fe(s) -0.45
Mg2+(aq)+2e− →Mg (s) -2.37
Cr3+(aq)+3e− →Cr (s) -0.73
Cu2+(aq)+2e− →Cu(s) 0.34

Steel and iron are often 'galvanized', or coated with a thin layer of zinc metal to prevent corrosion (iron rusts but zinc does not). What is the longest wavelength of light (in nm) that can eject electrons from zinc metal? (i.e. assume the electron's kinetic energy is very close to zero.) The work function of zinc = 4.3 eV and 1 electron-volt (eV) = 1.602*10^-19 J.

Part A

Cathodic protection of iron involves using another more reactive metal as a sacrificial anode. Classify each of the following metals by whether they would or would not act as a sacrificial anode to iron.

Drag each item to the appropriate bin.

View Available Hint(s)

Reset

Help

Ag

Mg

Cu

Pb

Sn

Zn

Au

Will act as sacrificial anode for iron

Will not act as sacrificial anode for iron

Submit

Part B

An old iron beam was coated with an unknown metal. There is a crack on the coating and it is observed that the iron is rusting at the fracture. The beam is in a structure that experiences high stress, resulting in frequent fractures to the coating.

What was the old metal coating likely made of and what metal you would use to repair the fractures to avoid further corrosion?

Drag each label to the appropriate target.

View Available Hint(s)

ResetHelp

gold

aluminum

tin

1. The old coating was likely made of .

2. would be a good choice for repairing the fracture.

Submit

Related Documents

CHEM 1050
Final Exam
Study Guide
CHEM 1050 Study Guide - Final Guide: Lithium Polymer Battery, Standard Hydrogen Electrode, Mercury Battery
magentadog113
University College - Chemistry Chem 112A Lecture Notes - Lecture 29: The Strongest, Cathodic Protection, Nissan L Engine
harlequinimpala978
CHEM105 Chapter Notes - Chapter 21: Cathodic Protection, Magnetic Core
amethystjellyfish251

Weekly leaderboard

Home
Homework Help 3,900,000
Chemistry 830,000
Start filling in the gaps now
Log in