Electrochemistry Review Flashcards
1
Q
Electrochemistry:
A
The study of electricity-related applications of oxidation-reduction reactions.
2
Q
Oxidation Number:
A
Numbers assigned to the elements in a chemical reaction that gives the apparent charge of the element.
3
Q
The oxidation number in an ionic compound is its ____.
A
True Charge.
4
Q
The oxidation number in a molecular compound is based on what?
A
The compounds distribution of electrons.
5
Q
How are oxidation numbers writen?
A
With the sign first, and then the number.
6
Q
What are the situations for oxidation numbers?
A
- Uncombined elements have an oxidation number of zero.
- The sum of a compounds oxidation numbers should always be zero.
- The sum of a polyatomic ions oxidation is the ions charge.
7
Q
LEO says GIR:
A
Losing electrons = oxidized.
Gaining electrons= reduced.
8
Q
Oxidation reduction reaction:
A
Any reaction in which atoms or ions undergo a change in oxidation number.
