a. 

Fe2O3: Sắt (III) oxit

NaHSO3: Natri hidrosunfit

BaSO4: Bari sunfat

Ca(H2PO4)2: Canxi hidrophotphat

Ca3(PO4)2: Canxi photphat

Al(NO3)3: Nhôm nitrat

H2S: Axit sunfuhidric

H2CO3: Axit cabonic

HBr: Axit Bromhidric

HCl: Axit clohidric

CO2: Cabon đioxit

KOH: Kali hidroxit

Mg(OH)2: Magie hidroxit

b.

Na2O ( Natri oxit) -> NaOH (Natri hidroxit)

CuO ( Đồng(II) oxit) -> Cu(OH)2 ( Đồng (II) hidroxit)

CaO ( Canxi oxit) -> Ca(OH)2 ( Canxi hidroxit)

ZnO ( Kẽm oxit) -> Zn(OH)2 ( Kẽm hidroxit)

FeO (Sắt (II) oxit) -> Fe(OH)2 (Sắt (II) hidroxit)

BaO ( Bari oxit) -> Ba(OH)2 (Bari hidroxit)

Al2O3 (Nhôm oxit) -> Al(OH)3 ( Nhôm hidroxit)

c.

N2O5 ( đinitơpentaoxit) -> HNO3 (Axit nitric)

SO2 (lưu huỳnh đioxit) -> H2SO3 ( Axit sunfurơ)

SO3 ( lưu huỳnh trioxit) -> H2SO4 (Axit sunfuric)

CO2 (Cabon đioxit) -> H2CO3 (Axit cabonic)

P2O5 (điphotphopentaoxit) -> H3PO4 (Axit photphoric)

                  Học tốt!!