Question

One litre of $C{O}_2$ is passed over hot coke, the volume becomes 1.4 litre. The composition of product is:

• A. 0.6 litre $CO$
• B. 08 litre $C{O}_2$
• C. 0.6 litre $C{O}_2$ and 0.8 litre $CO$
• D. 0.6 litre of $CO$ and 0.8 litre of $C{O}_2$

Answer 1

Answer: (C)

0.6 litre $C{O}_2$ and 0.8 litre $CO$

The reaction can be represented as:

$C{O}_2+C\to 2CO$

Let $xL$ of $C{O}_2$ combine with coke to form $CO$

Volume of $C{O}_2$ =$1-x$

Volume of $CO=2x$

Total volume=$1-x+2x=1+x=1.4L$

$\Rightarrow x=0.4L$

Hence, Volume of $CO=2x=2\times 0.4=0.8L$, and

Volume of $C{O}_2$ =$1-x=0.6L$