14 - Chem 204 Lecture14 While we have considered a number...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem 204 Lecture 14 While we have considered a number of chemical processes/reactions, we have left one out! Reduction – Oxidation or Redox reactions! These involve a change in oxidation state or valence of two of the reactants. One is oxidized and loses electrons The other is reduced and gains electrons. The two reactants are coupled in this way, hence the expression – Redox!
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Lecture 14 –Page 2 There is an easy way to remember the process: LEO say GER! (?) LEO: L ose E lectrons O xidation GER: G ain E lectrons R eduction http://www.abolitionist.com/reprogramming/lion.jpg
Background image of page 2
Lecture 14 –Page 3 Start out with a simple case. Zn(s)+2Ag + (aq) Zn 2+ (aq)+2Ag(s) This is a Redox couple. Ox – oxidized form; Red – reduced form; Keep in mind LEO says GER We can break this into two half-reactions: Zn loses electrons: Zn(s) Zn 2+ (aq)+2e - Ag gains electrons: Ag + (aq) + e - Ag(s) Ox/Red: Zn 2+ /Zn; Ag +
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Lecture 14 –Page 4 Some reactions are simple to analyze (like this one):
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 11

14 - Chem 204 Lecture14 While we have considered a number...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online