2.1.5 redox Flashcards
1
Q
give the words for OIL RIG
A
Oxidation Is Loss Reduction Is Gain
2
Q
when a substance is oxidised the oxidation number…
A
increases
3
Q
when a substance is reduced the oxidation number…
A
decreases
4
Q
hydrogen has a charge of +1 except…
A
in metal hydrides where is is -1 eg NaH
5
Q
Cl, Br and I have oxidation numbers of -1 except…
A
in compounds with oxygen or fluorine
6
Q
Oxygen had an oxidation number of -2 except…
A
in peroxides when it is -1, and in compounds with fluorine
7
Q
an oxidising agent is …
A
an electron acceptor
8
Q
a reducing agent is…
A
an electron donor
9
Q
a redox reaction must include…
A
one species being oxidised and one species being reduced
10
Q
a disproportionation reaction includes…
A
one element being simultaneously oxidised and reduced
11
Q
in potassium sulfate (VI) what does ‘(VI)’ refer to ?
A
the oxidation state
