Question

Question 1

Why is the mixture formed by heating copper and copper (II) chloride poured into excess water to precipitate copper (I) chloride?

Question 2

Why is copper (I) oxide made under alkaline rather than acid conditions?

Question 3

What is the difference between copper and zinc? Would copper and zinc be as transition metals?

Please help me with these questions.

Answer 1

Ans2. Copper(I) oxide or cuprous oxide is the inorganic compound with the formula Cu2O.It isbecause if you want cuprous oxide, Cu2O, then you will need to avoid acidic conditions, since the acid may react with the oxide and dissolve it. Cu+ is not stable in solution and tends to disproportionate to Cu and Cu++

Ans3.Copper is a reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, having a symbol cu, and atomic number 29. while Zinc is a  chemical element of atomic number 30, a silvery-white metal which is a constituent of brass and is used for coating iron and steel to protect against corrosion.

Copper has d10 configuration in ground state but in its most common oxidation state i.e Cu+2 it has d9 configuration Hence it is a d block element and a transition element.Zinc is not consider as a transition metal because its compounds or ions (Zn2+) contain a full filled d-orbital or sub shell and are unstable.Moreover it have only one ion which is the (Zn2+).