Lesson_22 - Galvanic cells Cu (s) Cu2+ (aq) + 2 eAg+ (aq) +...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Lesson 22 Galvanic cells
Background image of page 1

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

View Full DocumentRight Arrow Icon
Lesson 22 Definitions Oxidation takes place at the anode . Since electrons flow from the anode, it shows negative charge . Reduction takes place at the cathode . Since electrons flow to the cathode, it shows positive charge .
Background image of page 2
Lesson 22 Dry cell
Background image of page 3

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

View Full DocumentRight Arrow Icon
Lesson 22 Car battery
Background image of page 4
Lesson 22 Ag/Zn button battery
Background image of page 5

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

View Full DocumentRight Arrow Icon
Lesson 22 Hydrogen fuel cell O 2 ( g ) + 2 H 2 O( l ) + 4 e - = 4 OH - ( aq ) 2 H 2 ( g ) + 4 OH - ( aq ) = 4 H 2 O( l ) + 4 e - 2 H 2 ( g ) + O 2 ( g ) = 2 H 2 O( l )
Background image of page 6
Lesson 22 Faraday’s law “The mass of a given substance that is produced or consumed at an electrode is proportional to the quantity of electric charge passed through the cell.”
Background image of page 7

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

View Full DocumentRight Arrow Icon
Lesson 22 Useful definitions and relations Charge of a single electron: e = 1.6021773 x 10 -19 C (coulombs) Charge of one mole of electrons ( Faraday constant ): F = (6.022137 x 10 23 mol -1 ) (1.6021773 x 10 -19 C) = = 96,485.31 C mol -1 Electric current ( I ) is the amount of charge ( Q ) flowing through a circuit per unit of time (
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 13

Lesson_22 - Galvanic cells Cu (s) Cu2+ (aq) + 2 eAg+ (aq) +...

This preview shows document pages 1 - 9. Sign up to view the full document.

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