10) Aluminum doesn’t readily corrode because: its standard reduction potential i
ID: 930128 • Letter: 1
Question
10) Aluminum doesn’t readily corrode because:
its standard reduction potential is more positive than oxygen
its standard reduction potential is more negative than oxygen
it forms a dense coating of alumina, Al2O3, that slows oxidation.
It is already oxidized.
.
11) What best describes a glass?
A transparent, crystalline insulator.
A viscous liquid
An amorphous solid
The thermodynamic (lowest energy) state for a material
.
For the following reaction answer questions 13 & 14):
Fe(s) + Cu2+(aq) Fe2+(aq) + Cu(s)
13) What is being oxidized (oxidant)?
Fe2+
Cu2+
Cu
Fe
.
14) What is being reduced (reductant)?
Fe2+
Cu2+
Cu
Fe
Please answer all of them without guessing!!! Thanks
Explanation / Answer
10)
The reduction potential of Al and O2 are -1.66 V and -0.56 V respectively.
The reduction potential of Al is more negative than Oxygen.
Thus, the correct option is 2.
11)
Glass is a transparent, crystalline insulator.
13)
the element oxidized is Fe.
14)
The species reduced is Cu2+.
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