Question: In a flask of volume V litres, 0.2 mol of oxygen, 0.4 mol of nitrogen, 0.1 mol of ammonia and 0.3 mo...

Question

In a flask of volume V litres, 0.2 mol of oxygen, 0.4 mol of nitrogen, 0.1 mol of ammonia and 0.3 mol of helium are enclosed at . If the total pressure exerted by these non-reating gases is one atmosphere, the partial pressure exerted by nitrogen is

Answer 1

Solution

$\mathrm { P } _ { \mathrm { N } _ { 2 } } =$ Mol. fraction of $\mathrm { N } _ { 2 } \times$ Total perssure $= \frac { 0.4 } { 0.2 + 0.4 + 0.1 + 0.3 } \times 1 \mathrm {~atm} = 0.4 \mathrm {~atm}$ .