Question $3$

An ore consiring of Pod and C $C,O$ reaces or followns:

$Pb{O}_2+2HCl=PbC{l}_2+H_{2}O$

CuO$+2HCl=2CaC{l}_{2}O$ Weight $135kg.$

Orerall $=$PbO$+2$CaCl$PbC{O}_2+C{a}_{2}O$

The lead oride is $2$times more than the copper oride. Cacurate the tocal heat of He process and the lot iF $50$ J con't R$3\mathrm{.}60.$

Heat of fomations are:

$A{H}_{\text{p}\text{b}\text{o}}=-219200J$

$H_{\text{H}\text{a}\text{O}}=-285800J$

$1+$ tei $=-72800J$

$H{C}_{23}O=-107400J\frac{?}{{?}_{\frac{?}{?}}}$

$H+P_6{C}_2=-3480005$

$HCall=-125300J$