Question

Hoàn thành các phương trình sau và cân bằng hệ số
Al + ...... -->AlCl3
AL + ...... -->Al2O3
Al2O3 + ...... -->NaAlO2
Al2O3 + ...... -->Al2(SO4)3
Na + ...... -->Na2O
Na + ...... -->NaCl
Na + ...... -->NaOH
Na2O + ...... -->NaOH
NaOH + ...... -->NaHSO3
NaOH + ...... -->NaCl
NaHSO3 + ...... -->Na2SO4

Answer 1

$2Al + 3Cl_2 \xrightarrow{t^o} 2AlCl_3$
$4Al + 3O_2 \xrightarrow{t^o} 2Al_2O_3$
$Al_2O_3 + 2NaOH \to 2NaAlO_2 + H_2O$
$Al_2O_3 + 3H_2SO_4 \to Al_2(SO_4)_3 + 3H_2O$
$4Na + O_2 \xrightarrow{t^o} 2Na_2O$
$2Na + Cl_2 \xrightarrow{t^o} 2NaCl$
$2Na + 2H_2O \to 2NaOH + H_2$
$Na_2O + H_2O \to 2NaOH$
$NaOH +S O_2 \to NaHSO_3$
$NaOH + HCl \to NaCl + H_2O$
$NaHSO_3 + H_2SO_4 \to Na_2SO_4 + SO_2 + H_2O$

Answer 2

\(2Al+3Cl_2\rightarrow2AlCl_3\)

\(4Al+3O_2\rightarrow2Al_2O_3\)

\(Al_2O_3+2NaOH\rightarrow2NaAlO_2+H_2O\)

\(4Na+O_2\rightarrow2Na_2O\)

\(Na+Cl\rightarrow NaCl\)