Question

A vessel is filled with a mixture of oxygen and nitrogen. At what ratio of the partial pressure will the masses of the gases be identical?

• A. $P_{o_2}=P_{N_2}$
• B. $P_{o_2}=0.5P_{N_2}$
• C. $P_{o_2}=0.875P_{N_2}$
• D. $P_{o_2}=1.14P_{N_2}$

Answer 1

Answer: (C)

$P_{o_2}=0.875P_{N_2}$

$\frac{P_{O_2}}{P_{N_2}}=\frac{n_{O_2}}{n_{N_2}}$
$\frac{P_{O_2}}{P_{N_2}}=\frac{28}{32}=0.875$