Chapter 12 Redox reactions Flashcards
1
Q
Four ways to define oxidation
A
- Gain oxygen
- Loses Hydrogen
- Loses Electrons
- Oxidation state increase
2
Q
Four ways to define reduction
A
- Loses oxygen
- Gains Hydrogen
- Gains electrons
- Oxidation state decrease
3
Q
What is an oxidising agent?
A
A substance that causes another substance to be oxidised. However, it reduces itself.
4
Q
What is a reducing agent?
A
A substance that causes another substance to be reduced. However, it oxidises itself.
5
Q
How to test for oxidising agent?
A
Use aqueous potassium iodide, if it turns brown oxidising agent is present.
6
Q
How to test for reducing agent?
A
Use potassium manganate(VII), if it turns from purple to colourless, reducing agent is present.
