Name the substances, define the class of substances: MgO, KOH, HF, CuOH, CO2, Fe (OH) 2

Name the substances, define the class of substances: MgO, KOH, HF, CuOH, CO2, Fe (OH) 2, HI, BaSO3, ZnCl2, NaHCO3, Cu3 (PO4) 2, CuO, Mg (NO3) 2, CuI2.

MgO – magnesium oxide (basic oxide);
KOH – potassium hydroxide (alkali);
HF – hydrofluoric acid (acid);
CuOH – copper (I) hydroxide (base);
CO2 – carbon dioxide (acidic oxide);
Fe (OH) 2 – iron (II) hydroxide (base);
HI – hydroiodic acid (acid);
BaSO3 – barium sulfite (medium salt);
ZnCl2 – zinc chloride (medium salt);
NaHCO3 – sodium bicarbonate (acidic salt);
Cu3 (PO4) 2 – calcium orthophosphate (medium salt);
CuO – copper (II) oxide (basic oxide);
Mg (NO3) 2 – magnesium nitrate (medium salt);
CuI2 – copper (II) iodide (medium salt).