`#Ly`

$1)$

$4Na$ $+$ $O_2$ $\xrightarrow[]{t^o}$ $2Na_2O$

$Na_2O$ $+$ $H_2O$ `->` $2NaOH$

$2)$

$3Fe$ $+$ $2O_2$ $\xrightarrow[]{t^o}$ $Fe_3O_4$

$Fe_3O_4$ $+$ $4H_2$ $\xrightarrow[]{t^o}$ $3Fe$ $+$ $4H_2O$

$Fe$ $+$ $2HCl$ `->` $FeCl_2$ $+$ $H_2$

$2H_2$ $+$ $O_2$ $\xrightarrow[]{t^o}$ $2H_2O$

$H_2O$ $+$ $SO_3$ `->` $H_2SO_4$

$3H_2SO_4$ $+$ $2Al$ `->` $Al_2(SO_4)_3$ $+$ $3H_2$

$3)$

$CaCO_3$ $\xrightarrow[]{t^o}$ $CaO$ $+$ $CO_2$

$CaO$ $+$ $H_2O$ `->` $Ca(OH)_2$

$Ca(OH)_2$ $+$ $CO_2$ `->` $CaCO_3$ $+$ $H_2O$

$4)$

$2KClO_3$ $\xrightarrow[]{t^o}$ $2KCl$ $+$ $3O_2$

$O_2$ $+$ $S$ $\xrightarrow[]{t^o}$ $SO_2$

$2SO_2$ $+$ $O_2$ $\buildrel{{V_2O_5,t^o}}\over\rightleftharpoons$ $2SO_3$

$SO_3$ $+$ $H_2O$ `->` $H_2SO_4$

$H_2SO_4$ $+$ $Fe$ `->` $FeSO_4$ $+$ $H_2$

$H_2$ $+$ $2Cl$ $\xrightarrow[]{as}$ $2HCl$

Đáp án:

Bạn tham khảo~

1)

$4Na + O_{2}\xrightarrow{t^o}2Na_{2}O$

`Na_{2}O + H_{2}O->2NaOH`

2)

$3Fe + 2O_{2}\xrightarrow{t^o}Fe_{3}O_{4}$

$Fe_{3}O_{4} + 4H_{2}\xrightarrow{t^o}3Fe + 4H_{2}O$

`Fe + H_{2}SO_{4}->FeSO_{4} + H_{2}↑`

$2H_{2} + O_{2}\xrightarrow{t^o}2H_{2}O$

`SO_{3} + H_{2}O->H_{2}SO_{4}`

`Al_{2}O_{3} + 3H_{2}sO_{4}->Al_{2}(SO_{4})_{3} + 3H_{2}O`

3)

$CaCO_{3}\xrightarrow{t^o}CaO + CO_{2}↑$

`CaO + H_{2}O->Ca(OH)_{2}`

`Ca(OH)_{2} + CO_{2}->CaCO_{3}↓ + H_{2}O`

4)

$2KClO_{3}\xrightarrow{t^o}2KCl + 3O_{2}↑$

$S + O_{2}\xrightarrow{t^o}SO_{2}↑$

$2SO_{2} + O_{2}\xrightarrow[V_{2}O_{5}]{t^o}SO_{3}$

`SO_{3} + H_{2}O->H_{2}SO_{4}`

`Zn + H_{2}SO_{4}->ZnSO_{4} + H_{2}↑`

$H_{2} + 2Cl\xrightarrow{as}2HCl$