Các phản ứng xảy ra:

\(2Al + 3C{l_2}\xrightarrow{{{t^o}}}2AlC{l_3}\)

\(2Mg + {O_2}\xrightarrow{{{t^{o }}}}2MgO\)

\(2KN{O_3}\xrightarrow{{{t^o}}}2KN{O_2} + {O_2}\)

\(2Fe{(OH)_3}\xrightarrow{{{t^o}}}F{e_2}{O_3} + 3{H_2}O\)

\(S + {O_2}\xrightarrow{{{t^o}}}S{O_2}\)

\(2Ca + {O_2}\xrightarrow{{{t^o}}}2CaO\)

\(3Fe + 2{O_2}\xrightarrow{{{t^o}}}F{e_3}{O_4}\)

$Đáp$ $án$ $+$ $Giải$ $thích$ $các$ $bước$ $giải$ $:$

$1,$ $2Al$ $+$ $3Cl_2$ ${\text{ }}\xrightarrow{{{t^o}}}$ $2AlCl_3$

$2,$ $2Mg$ $+$ $O_2$ ${\text{ }}\xrightarrow{{{t^o}}}$ $2MgO$

$3,$ $2KNO_3$ ${\text{ }}\xrightarrow{{{t^o}}}$ $2KNO_2$ $+$ $O_2$

$4,$ $2Fe(OH)_3$ ${\text{ }}\xrightarrow{{{t^o}}}$ $Fe_2 O_3$ $+$ $3H_2 O$

$5,$ $S$ $+$ $O_2$ ${\text{ }}\xrightarrow{{{t^o}}}$ $SO_2$

$6,$ $2Ca$ $+$ $O_2$ ${\text{ }}\xrightarrow{{{t^o}}}$ $2CaO$

$7,$ $3Fe$ $+$ $2O_2$ ${\text{ }}\xrightarrow{{{t^o}}}$ $Fe_3 O_4$

$Chúc$ $bn$ $hk$ $tốt$ $!!$ $:))))$ $Xin$ $ctlhn$ $ạ.$