1.4 Oksidien happo-emäsluonne

1.20

a)
$Al_2O_3\left(s\right)+2NaOH\left(aq\right)+H_2O\left(l\right)\rightarrow2NaAl\left(OH\right)_4\left(aq\right)$
b)
$Al_2O_3\left(s\right)+6HCl\left(aq\right)\rightarrow2AlCl_3+3H_2O$

1.21

$2NO\ \rightarrow N_2+O_2$

$2NO_2\rightarrow N_2+2O_2$

$2CO+O_2\rightarrow2CO_2$