AL2O3, SO3, CO2, CUO, H2SO4, KOH, BA(OH)2, ZNSO4, NA2SO4,NAHCO3, K2HPO4, CA(HSO4)2, H3PO4, CACL2
Câu 5: Cho các CTHH sau: Al
2
O
3
, SO
3
, CO
2
, CuO, H
2
SO
4
, KOH, Ba(OH)
2
, ZnSO
4
, Na
2
SO
4
,
NaHCO
3
, K
2
HPO
4
, Ca(HSO
4
)
2
, H
3
PO
4
, CaCl
2