Question

$26$ mL of $C{O}_2$ is passed over red hot coke. The volume of $CO$ evolved will be :

• A. $15$ mL
• B. $10$ mL
• C. $32$ mL
• D. $52$ mL

Answer 1

The correct option is D $52$ mL

The chemical equation for this is as follows:
$C{O}_2+C_{\left(s\right)}\to 2CO$

$1$ unit volume gives here $2$ unit volume of $CO$, as stoichiometry of the reaction suggests.

So, $26mLC{O}_2$ will give $26\times 2=52mLCO$.