9&19 redox Flashcards
1
Q
Oxidation =
A
loss of electrons, increase in oxidation number.
2
Q
Reduction =
A
gain of electrons, decrease in oxidation number.
3
Q
Oxidation state =
A
the apparent charge of an atom in a free element, molecule or ion.
4
Q
Biochemical oxygen demand (BOD) = (measured in ppm).
A
the amount of oxygen required to oxidise organic matter in a sample of water at a definite temperature over a period of 5 days
5
Q
Electrolysis =
A
the process by which electrical energy is used to drive a non-spontaneous chemical reaction.
6
Q
Cell potential =
A
the potential difference between the cathode and the anode.
7
Q
Faraday’s constant =
A
the charge of one mole of electrons.
