Question

Сu(no3)2 Cu(OH)2 Cuso4 CuCL2

Answer 1

Cu(NO3)2+2NaOH=Cu(OH)2+2NaNO3
Cu(OH)2+H2SO4=CuSO4+2H2O
CuSO4+BaCl2=BaSO4+CuCl2

Answer 2

The chemical formulas you provided are:

1. Cu(NO3)2: Copper(II) nitrate
2. Cu(OH)2: Copper(II) hydroxide
3. CuSO4: Copper(II) sulfate
4. CuCl2: Copper(II) chloride

These are all compounds containing copper in different oxidation states and with various anions:

1. Copper(II) nitrate (Cu(NO3)2) contains copper in the +2 oxidation state and nitrate ions (NO3-).
2. Copper(II) hydroxide (Cu(OH)2) also has copper in the +2 oxidation state but is combined with hydroxide ions (OH-).
3. Copper(II) sulfate (CuSO4) contains copper in the +2 oxidation state and sulfate ions (SO4^2-).
4. Copper(II) chloride (CuCl2) has copper in the +2 oxidation state and chloride ions (Cl-).

It's worth noting that the oxidation state of copper in these compounds is +2, which is a common oxidation state for copper in its chemical compounds.