Electrolysis Flashcards
1
Q
inert electrodes
A
gold, graphite, platinum, rhodium
2
Q
electrolysis definition
A
The chemical change occurring when an electric current passes through an electrolyte. ( Either a molten ionic compound or a solution containing mobile ions.)
3
Q
farday’s constant
A
96 500 C
4
Q
quantity of electricity (Q)
A
unit is (C)oulombs
5
Q
time (t)
A
unit (s)econds
6
Q
current (I)
A
unit A
7
Q
equation
A
C= A × s
or
Q= I x t
8
Q
steps to determine the mass of a Mol of an ion (eg. mg) produced at a particular quantity of electricity
A
- calculate quantity of electricity
- write reaction at the electrode
- get the ratio of mole of electrons to mole of ion
- calculate one C per mol
- then the C used in the reaction
- calculate the mass of mg produced in the equation
