Răspuns :
a) Na2O+H2O=>NaOH
b)Na+H2O=>NaOH+H2
c)AlCl3+3NaOH=Al(OH)3+3NaCl
d)2NaOH+H2SO4=>Na2SO4+2H2O
e)Al(OH)3+H2SO4=>Al2(SO4)3+ H2O
f)2Al(OH)3=>Al2O3+3H2O
g)CO2+NaOH=>Na2CO3+H2O
h)NaOH+HCl=>NaCl+H2O
Răspuns:
Explicație:
Na2O + H2O=2NaOH a=Na2O b= H2O c= NaOH
2Na + 2H2O=2NaOH + H2 d=Na
AlCl3 +3 NaOH= Al(OH)3 +3 NaCl e=NaCl f=Al(OH)3
2NaOH + H2SO4=Na2SO4 +2 H2O g=H2SO4 h=Na2SO4
2Al(OH)3 +3 H2SO4=Al 2(SO4)3 + 6H2O i=Al2(SO4)3
2Al(OH)3= Al2 O3 +3H2O j=Al2O3
CO2 +2 NaOH = Na2CO3 +H2O k=Na2CO3
NaOH+ HCl = NaCl + H2O l = HCl