Question

Calculate the volume occupied by 7.0 g of nitrogen gas at ${27}^{o}C$ and 750 mm Hg pressure.

• A. $62.32L$
• B. $6.232L$
• C. $623.2L$
• D. $0.623L$

Answer 1

Answer: (B)

Given P = 750 mm $=\frac{750}{760}$ atm $V=?w=7.0g$ $T={27}^{o}C=27+273=300K$ $R=0.0821$ , Molecular wt $(M)=28$ According to ideal gas equation, $PV=\frac{w}{M}\times R\times T$ $V=\frac{w\times R\times T}{P\times M}$ $V=\frac{7\times 760\times 0.0821\times 300}{28\times 750}$ $=\frac{1308772}{21,000}$ $=6.232L$