Question

Equal weights of methane and oxygen are mixed an empty container at 25°c.The fraction of the total pressure exerted by oxygen is

Answer 1

$\huge\underline\green{\sf Answer}$

$\small{\boxed{\sf Fraction\:of\:total\:pressure\:excerted\:by\:oxygen={\frac{P}{3}}}}$

$\huge\underline\green{\sf Solution}$

Let ,

mass of methane and oxygen b= m gram.

MOLE FRACTION :-

$\large{\boxed{\sf X={\frac{n_{1}}{n_{1}+n_{2}}}}}$

Here n = moles

Mole fraction of oxygen :-

$\large{\sf X_{O_{2}} = {\frac{m/32}{(m/32 +m/16)}}}$

$\large{\boxed{\sf X_{O_{2}} = {\frac{1}{3}}}}$

Let the total pressure be P.

$\large{\sf Partial\:pressure\:of\:O_{2}, pO_{2} = P \times X_{O_{2}}}$

$\large{\sf P_{o_{2}} = P \times {\frac{1}{3}} = {\frac{P}{3}}}$

$\large\red{\boxed{\sf P_{O_{2}}={\frac{P}{3}}}}$

Answer 2

Answer:

⭐Refer to attachment⭐

hope help

$\huge\mathfrak\pink{Thanks}$