cho các chất : K2O, Al2O3, SO3, HCl, NaOH, ZnSO4, CaCO3. chất nào tác dụng được với : nước, H2SO4, KOH, BaCl2 viết PTHH

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$\text{Cho K2O, Al2O3, SO3, HCl, NaOH, ZnSO4, CaCO3}$

$\text{a) nước: K2O, SO3}$

$\rightarrow$ $\text{K2O+H2O$\rightarrow$2KOH}$

$\rightarrow$ $\text{SO3+H2O$\rightarrow$H2SO4}$

$\text{b) H2SO4: K2O, Al2O3, NaOH, CaCO3}$

$\rightarrow$ $\text{H2SO4+K2O$\rightarrow$K2SO4+H2O}$

$\rightarrow$ $\text{3H2SO4+Al2O3$\rightarrow$Al2(SO4)3+3H2O}$

$\rightarrow$ $\text{H2SO4+2NaOH$\rightarrow$Na2SO4+2H2O}$

$\rightarrow$ $\text{CaCO3+H2SO4$\rightarrow$CaSO4+H2O+CO2↑}$

$\text{c) KOH: Al2O3, SO3, HCl, ZnSO4, CaCO3}$

$\rightarrow$ $\text{Al2O3+2KOH$\rightarrow$2KAlO2+H2O}$

$\rightarrow$ $\text{2KOH+SO3$\rightarrow$K2SO4+H2O}$

$\rightarrow$ $\text{KOH+SO3$\rightarrow$KHSO4}$

$\rightarrow$ $\text{KOH+HCl$\rightarrow$KCl+H2O}$

$\rightarrow$ $\text{ZnSO4+2KOH$\rightarrow$Zn(OH)2↓+K2SO4}$

$\rightarrow$ $\text{CaCO3+2KOH$\rightarrow$Ca(OH)2↓+K2CO3}$

$\text{d) BaCl2: ZnSO4, CaCO3}$

$\rightarrow$ $\text{BaCl2+ZnSO4$\rightarrow$BaSO4↓+ZnCl2}$

$\rightarrow$ $\text{BaCl2+CaCO3$\rightarrow$BaCO3↓+CaCl2}$

#TRANPHAMGIABAO