Question 1
What statement is inconsistent with the chemistry of copper?
◦ It is a reddish colored metal that accounts for only 0.0068% of the earth's crust by mass.
◦ It has a high electrical conductivity and is widely used to make electrical wiring.
◦ It is commonly found in the elemental state.
◦ It is used to make corrosion-resistant water pipes because it has a positive oxidation potential.
Question 2
Which of the following is a disproportionation reaction?
◦ 2 Cu
+(
aq) → Cu(
s) + Cu
2+(
aq)
◦ Cu
2S(
l) + O
2(
g) → 2 Cu(
l) + SO
2(
g)
◦ Cu
2+(
aq) + 4 NH
3(
aq) → Cu(NH
3)
42+(
aq)
◦ 3 Cu(
s) + 2 NO
3-(
aq) + 8 H
+(
aq) → 3 Cu
2+(
aq) + 2 NO(
g) + 4 H
2O(
l)