Question

equal masses of methan and oxygen are mixed in an empty container at 25 celsius. the fraction of total pressure exerted by oxygen ?​

Answer 1

Answer:

Equal masses of methane and oxygen are mixed in an empty container at 25oC. The fraction of the total pressure exerted by oxygen is 31

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Answer 2

Answer:

$\%P_o_2=33 \%$

Explanation:

Partial pressure exerted by oxygen is given by

$P_o_2=(\frac{n_o_2}{n_o_2+n_c_h_4})P_t$

Since molar mass of O₂=32 and that of CH₄=16

and equal masses, say m grams are mixed;

$P_o_2=(\frac{\frac{m}{32}}{\frac{m}{32}+\frac{m}{16}})P_t\\\\\boxed{P_o_2=\frac{1}{3}P_t}$

Fraction of pressure exerted by oxygen

$\%p=\frac{P_o_2}{P_t} X 100$

$=>\boxed{\%P_o_2=33 \%}$

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