Question

Complete the following chemical equations
i) $PbS+4O_3\to PbS{O}_4+...............$
ii) $Cu+2H_{2}S{O}_4\to CuS{O}_4+..............+2H_{2}O$
iii) $C{l}_2+2H_{2}O+S{O}_2\to ..............+2HCl$

Answer 1

Complete chemical equations are as shown:
(i) Ozone oxidises lead sulphide to lead sulphate.

$PbS\left(s\right)+4O_3\left(g\right)\to PbS{O}_4\left(s\right)+4O_2\left(g\right)$
(ii) $Cu$ reacts with sulfuric acid to form cupric sulphate and $S{O}_2$.
$Cu+2H_{2}S{O}_4\to CuS{O}_4+S{O}_2+2H_{2}O$
(iii) $C{l}_2$ oxidises $S{O}_2$ to sulphuric acid.
$C{l}_2+2H_{2}O+S{O}_2\to H_{2}S{O}_4+2HCl$