Electrochemistry Flashcards
1
Q
What is a non-electrolyte
A
It dissolves in water but does not ionize
2
Q
Examples of non-electrolytes
A
Sugar/H2O
Urea/H2O
Molten Na, Cl, Ca, Cl2
3
Q
Oxidation states of
Ionic hydride
Covalent hydride
A
Ionic hydride = —1
Covalent hydride = +1
4
Q
Peroxide example
A
H2O2 (-1)
5
Q
Superoxide example
A
NaO2 (-½)
6
Q
Oxyfluoride
A
O2F2 (+1)
OF2 (+2)
7
Q
Oxidizing agents are
A
Non metals (nOn = Ox)
Metal cations
8
Q
Reducing agents are
A
Metals
Nonmetal anions
9
Q
Electrolysis is
A
non spontaneous
endothermic
10
Q
Brine solution is
A
Super saturated solution of NaCl/H2O
11
Q
Faraday’s Law of Electrolysis
A
Amount of product (w) is directly proportional to charge (Q)
so w = zQ
z is a constant which is electrochemical weight
12
Q
z =
A
z = Molar mass / n x 96500 C
or
z = M / nF
