

Hãy cân bằng PTHH sau :
-Ca + O → CaO
-Al + HCl → AlCl3 + H2
-KClO3 → KCl + O2
-Al + O2 → Al2O3
-Cu(NO3)2 + NaOH → Cu(OH)2 + NaNO3
-Al2(SO4)3 + AgNO3 → Al(NO3)3 + Ag2SO4
-Al2 (SO4)3 + NaOH → Al(OH)3 + Na2SO4
-CH3COOH+ Na2CO3 → CH3COONa + H2O + CO2
-Ca + O → CaO
-Al + HCl → AlCl3 + H2
-KClO3 → KCl + O2
-Al + O2 → Al2O3
-Cu(NO3)2 + NaOH → Cu(OH)2 + NaNO3
-Al2(SO4)3 + AgNO3 → Al(NO3)3 + Ag2SO4
-Al2 (SO4)3 + NaOH → Al(OH)3 + Na2SO4
-CH3COOH+ Na2CO3 → CH3COONa + H2O + CO2