Question

The volume of 2.8 g of $CO$ at ${27}^{0}C$ and 0.821 atm pressure is:

• A. 1.5 litre
• B. 3 litre
• C. 30 litre
• D. 0.3 litre

Answer 1

The correct option is B 3 litre

Molecular mass of $CO$ = 28.

Moles of $CO$ present $=\frac{2.8}{28}$

$V=\frac{nRT}{P}=\frac{\frac{2.8}{28}\times 0.0821\times 300}{0.821}=3litres$