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  • 200Ml of   effuse from a Porous container in

200Ml of  \mathrm{O}_2(\mathrm{~g}) effuse from a Porous container in 200 sec .75 Ml of unknowns gas effuse under the same condition of temperature and pressure in 225sec. Calculates vapour density of unknown gas?

Option: 1

64


Option: 2

128


Option: 3

144


Option: 4

32


Answers (1)

\mathrm{\frac{\text{r}_{\mathrm{O}_3}}{\text{r}_{\text {unknown}}}=\frac{\frac{v_1}{t_1}}{\frac{v_2}{t_2}}=\sqrt{\frac{M_{\text {unknown }}}{M_{\mathrm{O}_2}}}}

\mathrm{\frac{200 \times 225}{200 \times 75}=\sqrt{\frac{\text { Munknown}}{32}}}

\mathrm{\begin{aligned} & 3=\sqrt{\frac{\text { Munknown }}{32}} \\ & 9=\frac{\text { Munknown }}{32} \end{aligned}}

\mathrm{\text { Munknown }=32 \times 9=288}

\mathrm{V \cdot D=\frac{288}{2}=144}

 

Posted by

Sumit Saini

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