Topic 3 - Redox Flashcards
1
Q
what is oxidation?
A
- loss of electrons
- loss of hydrogen
- increase in oxidation number
- gain of oxygen
2
Q
what is reduction?
A
- gain of electrons
- gain of hydrogen
- decrease of oxidation number
- loss of oxygen
3
Q
what is oxygen’s number (not in peroxide)?
A
-2
4
Q
what is an oxidising agent?
A
a species that causes another element to be oxidised but is itself reduced (electron acceptor)
5
Q
what is a reducing agent?
A
a species that causes another element to be reduced, but itself is oxidised (electron donor)
6
Q
what is the reaction between acid and metal?
A
acid and metal -> salt and hydrogen
7
Q
what is the reaction between acid and metal hydroxide?
A
acid and metal hydroxide -> salt and water
8
Q
what is the reaction between acid and metal carbonate?
A
acid and metal carbonate -> salt and carbon dioxide and oxygen
9
Q
what is a disproportionation reaction?
A
when an element in a single species simultaneously oxidises and reduces
