Question

NaOH+?-Na2SO4+?Cu(OH)2+?-CuSo4+??+CuSO4-Cu(OH)2+??+CO2-Na2CO3+?Cu(OH)2-t-?+??+HCL=AlCl3+H2OAl2(SO4)3+?=Al(OH)3+?

Answer 1

NaOH + H2SO4 -> Na2SO4 + H2O
Cu(OH)2 + H2SO4 -> CuSO4 + H2O
NaOH + CuSO4 -> Cu(OH)2↓ + Na2SO4
NaOH + CO2 -> Na2CO3 + H2O
Cu(OH)2 -> CuO + H2O
Al(OH)3 + HCl -> AlCl3 + H2O
Al2(SO4)3 + KOH -> Al(OH)3↓ + K2SO4

Answer 2

NaOH+CuSO4-Na2SO4+Cu(OH)2+H2O
Cu(OH)2+CO2-CuCO3+H2O
Na2CO3+Cu(OH)2-CuCO3+2NaOH
Al(OH)3+HCl-AlCl3+3H2O
Al2(SO4)3+NaOH-Al(OH)3+Na2SO4