CaO+H2SO4 suy ra CO2+Ba(OH2) suy ra Fe(OH)2+H2SO4 suy ra Al+HCl suy ra

2 câu trả lời

Đáp án:

 CaO+ H2SO4 -> CaSO4 +H2O

CO2 + Ba(OH)2 -> BaCO3 + H2O

Fe(OH)2+ H2SO4 -> FeSO4 + 2H2O

2Al+ 6HCl ->2 AlCl3 + 3H2

Giải thích các bước giải:

 

CaO + $H_{2}$$SO_{4}$ → $CaSO_{4}$ + $H_{2}$O
$CO_{2}$ + $BaOH_{2}$ → $BaCO_{3}$↓ +$H_{2}$O 
$Fe(OH)_{2}$ + $H_{2}$$SO_{4}$ → $FeSO_{4}$ + 2$H_{2}$O 
2Al + 6HCl → 2$AlCl_{3}$ + 3$H_{2}$ ↑

 

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