Question

One litre of $C{O}_2$ is passed through red hot coke. The volume becomes 1.4 litres at same temperature and pressure. The composition product is:

Answer 1

The reaction equation is

${CO}_2+C⟶2CO$

$IV$ $IV$ $2V$

Let $xL$ of ${CO}_2$ gives $2xL$ of $CO$.

Volume of ${CO}_2$ left $=1-x$

Total volume $=1.4L$

So,

$(1-x)+2x=1.4$

$1+x=1.4$

$x=0.4L$

As $CO=2x=2\times 0.4=0.8L$

Volume of ${CO}_2=1.4-0.8=0.6L$

Composition of product is $0.8L$ $CO$ & $0.6L$ of ${CO}_2$.