Four test tubes contain a solution of copper sulfate (2). a) potassium nitrate b) sodium hydroxide

Four test tubes contain a solution of copper sulfate (2). a) potassium nitrate b) sodium hydroxide c) barium chloride d) sulfuric acid Draw up the equations of the reaction proceeding to the end, in molecular and ion-molecular form.

Let’s analyze the possibility of these reactions:
1. Two salts CuSO4 and KNO3 do not react, since a weak electrolyte is not formed
2. Salt CuSO4 and alkali NaOH react to form an insoluble base Cu (OH) 2
CuSO4 + 2NaOH = Cu (OH) 2 + Na2SO4
Cu (2+) + SO4 (2-) + 2Na (+) + 2OH (-) = Cu (OH) 2 + 2Na (+) + SO4 (2-)
3. CuSO4 and BaCl2 react to form BaSO4 precipitate
CuSO4 + BaCl2 = BaSO4 + CuCl2
Cu (2+) + SO4 (2-) + Ba (2+) + 2Cl (-) = BaSO4 + Cu (2+) + 2Cl (-)
4. Two salts CuSO4 and H2SO4 do not react