Given the reactions of ozone with the following and give equations.
(i) $PbS$
(ii) $SnC{l}_2/HCl$
(iii) Moist $KI$
(iv) $Ba{O}_2$

Oxidation reactions of ozone:
(i) Lead sulphide (black) is oxidized to lead sulphate (white)
$PbS+4O_3\to PbS{O}_4+4O_2$
(ii) $SnC{l}_2/HCl$ is oxidized to $SnC{l}_4$
$3SnC{l}_2+6HCl+O_3\to 3SnC{l}_4+3H_{2}O$
(iii) Moist potassium iodide is oxidized to iodine.
$2KI+H_{2}O+O_3\to 2KOH+I_2+O_2$

(iv) $Ba{O}_2$ is reduced to $BaO$
$Ba{O}_2+O_3\to BaO+2O_2$