Question

When 1 L of $CO_{2}$ is heated with graphite, the volume of the gases collected is 1.5 L. Calculate the number of moles of CO produced at STP

• A. $\frac{1}{11.2}$
• B. $\frac{28}{22.4}$
• C. $\frac{1}{22.4}$
• D. $\frac{14}{22.4}$

Answer 1

Answer: (C)

$\underset{1 - x}{C O_{2} \left(\right. g \left.\right) + C \left(\right. s \left.\right)} \rightarrow \underset{2 x}{2 C O \left(\right. g \left.\right)}$

Total volume $=1+x=1.5$

So $x=0.5$ L

Volume of $CO=2\times 0.5=1$ L

Moles of $CO=\frac{1}{22.4}$ moles