Question

A vessel of volume 4 litres contains a mixture of 8g of $O_2$ 14 g of N2 and 22 g of $C{O}_2$ at ${27}^{\circ }C$. The pressure exerted by the mixture is ?

• A. $10$ atmosphere
• B. $5\times {10}^{6}N/m^2$
• C. $7.69\times {10}^{5}N/m^2$
• D. $6\times {10}^{5}N/m^2$

Answer 1

The correct option is C $7.69\times {10}^{5}N/m^2$

Given. No of mols of $0,=\frac{8}{32}=0.25$

No. of mols of $N_2=\frac{14}{28}=0.5$

No. of mols of $C{O}_2=\frac{22}{44}=0.5$

To tat no. of $m_0\mid s=1.25$

we know retation

$PV=\cap RT$

$P\times 4\times {10}^{-3}=125\times 8.3\times 300$

$P=7.69\times {10}^{5}N/m^2$