Make up the reaction equation: Na – NaOH – Cu (OH) 2 – CuCl2. Mg – MgO – MgCl2 – Mg (OH) 2.

Make up the reaction equation: Na – NaOH – Cu (OH) 2 – CuCl2. Mg – MgO – MgCl2 – Mg (OH) 2. Ca- CaO – Ca (OH) 2 – CaSO4.

one)
Sodium with water: 2Na + 2H2O = 2NaOH + H2
Sodium hydroxide with copper nitrate: 2NaOH + Cu (NO3) 2 = Cu (OH) 2 + 2NaNO3
Copper hydroxide with chloride acid: Cu (OH) 2 + 2HCl = CuCl2 + 2H2O

2)
Magnesium with oxygen: 2Mg + O2 = 2MgO
Magnesium oxide with chloride acid: MgO + 2HCl = MgCl2 + H2O
Magnesium chloride with sodium hydroxide: MgCl2 + 2NaOH = Mg (OH) 2 + 2NaCl

3)
Calcium with oxygen: 2Ca + O2 = 2CaO
Calcium oxide with water: CaO + H2O = Ca (OH) 2
Calcium hydroxide with sulfuric acid: Ca (OH) 2 + H2SO4 = CaSO4 + 2H2O