IUB CHEM-C 118 - 11-5 chapter 22 (16 pages)

Previewing pages 1, 2, 3, 4, 5 of 16 page document View the full content.
View Full Document

11-5 chapter 22



Previewing pages 1, 2, 3, 4, 5 of actual document.

View the full content.
View Full Document
View Full Document

11-5 chapter 22

82 views


Pages:
16
School:
Indiana University, Bloomington
Course:
Chem-C 118 - Principles of Chemistry and Biochemistry Ii

Unformatted text preview:

22 Coordination Chemistry 22 1 Properties of the Transition Elements 22 2 Iron and Steel The Use of Pyrometallurgy 22 3 Copper A Coinage Metal 22 4 Silver and Gold The Other Coinage Metals 22 5 Chromium 22 6 Coordinate Covalent Bonds 22 7 Crystal Field Theory Friday Friday October October 31 31 2014 2014 Read Read Section Section 22 1 22 1 for for Friday Friday Sections Sections 22 2 22 2 22 3 22 3 and and 22 4 22 4 Monday Monday End End of of Chapter Chapter 22 22 Problems Problems 8 8 14 14 16 16 18 18 20 20 21 21 22 22 26 26 28 28 30 30 32 32 34 34 36 36 38 38 40 40 42 42 44 44 46 46 48 48 50 50 52 52 54 54 56 56 58 58 60 60 62 62 63 63 65 65 67 67 73 73 75 75 77 77 78 78 79 79 83 83 85 85 91 91 Bronze Brass The Bronze age began 3800 BC in the Middle East Bronze Cu Sn 7 10 alloy Harder than Cu Copper and bronze slowly turn green when exposed to air 2 Cu s O2 g CO2 g H2O Cu2 OH 2CO3 s copper II hydroxycarbonate Brass Cu Zn 20 45 alloy Brass is easy to cast and stamp widely used in pipes valves and fittings Silver Gold Other Coinage Metals Silver and Gold occur in their elemental form in nature Gold is extremely dense 19 3g ml or possibly 19 3 g cm3 this allowed for panning during the gold rush Gold Au is the most malleable metal Thin gold leaf is used to cover structures Silver is the best metallic conductor Silver Gold Other Coinage Metals Both are soft use alloys to increase strength Sterling silver 92 5 Ag 7 5 Cu Pure gold 24 carats 18 carat gold 75 Au 25 Cu 14 carat gold 58 Au 42 Cu Gold will not react with O2 even at high T pure gold Silver will slowly form Ag2O at high T Lack of oxidation is explained by reduction potentials Silver Gold Other Coinage Metals Silver reacts with nitric acid 3 Ag s 4 H aq NO3 aq 3 Ag aq NO g 2 H2O Gold dissolves in aqua regia 3 1 conc HCl HNO3 Au s 6 H aq 3 NO3 aq 4 Cl aq AuCl4 aq 3 NO2 g 3 H2O In 1940 the Nazis had declared no gold shall leave Germany however two Nobel laureates had sent their medals to Denmark for protection



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view 11-5 chapter 22 and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view 11-5 chapter 22 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?