1.2NaOH+CuSO4=Na2SO4+Cu(OH)2⬇️
2Na+2OH+Cu+SO4=2Na+SO4+Cu(OH)2
Cu+2OH=Cu(OH)2
2.Na2CO3+2HNO3=2NaNO3+H2CO3
2Na+CO3+2H+2NO3=2Na+2NO3+2H+CO3
3.BaCl2+H2SO4=BaSO4⬇️+2HCl
Ba+2Cl+2H+SO4=BaSO4+2H+2Cl
Ba+SO4=BaSO4
4.2HCl+Ba(OH)2=BaCl2+2H2O
2H+2Cl+2Ba+2OH=Ba+Cl2+2H2O
2H+2OH=2H2O
5.AlCl3+3NaOH=Al(OH)3⬇️+3NaCl
Al+3Cl+3Na+3OH=Al(OH)3+3Na+3Cl
Al+3OH=Al(OH)3
6.K2CO3+H2SO4=K2SO4+H2CO3
2K+CO3+2H+SO4=2K+SO4+2H+CO3
7.2NaOH+H2SO4=Na2SO4+2H2O
2Na+2OH+2H+SO4=2Na+SO4+2H2O
2OH+2H