0.25g of an organic compound gave 30cm^(3) of moist dinitrogen at 288K and 745mm pressure. Calculate the percentage of nitrogen. (Aqueous tension at 288K = 12.7mm)

0.25g of an organic compound gave 30cm^(3) of moist dinitrogen at 288K

1.	0.25g of an organic compound gave 30cm^(3) of moist dinitrogen at 288K and 745mm pressure. Calculate the percentage of nitrogen. (Aqueous tension at 288K = 12.7mm)
Answer» <html><body><p><<a href="https://interviewquestions.tuteehub.com/tag/p-588962" style="font-weight:bold;" target="_blank" title="Click to know more about P">P</a>></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :Mass of the substance = 0.25g <br/> Volume of moist dinitrogen = `30cm^(3)` <br/> Temperature = 288K <br/> Pressure `= 745- 12.7 = 732.3mm` <br/> Volume of dinitrogen at S.T.P <br/> `V_(2) = (P_(1)V_(1))/(T_(1)) xx (T_(2))/(P_(2)) = (732.3 xx 30 xx 273)/(288 xx <a href="https://interviewquestions.tuteehub.com/tag/760-335611" style="font-weight:bold;" target="_blank" title="Click to know more about 760">760</a>) = 27.4 <a href="https://interviewquestions.tuteehub.com/tag/cm-919986" style="font-weight:bold;" target="_blank" title="Click to know more about CM">CM</a>^(3)` <br/> `22400cm^(3)` of dinitrogen at STP weight = 28g <br/> `27.4 cm^(3)` of dinitrogen at STP weight `= (28 xx 27.4)/(22400)` <br/> = 0.034g <br/> Percentage of <a href="https://interviewquestions.tuteehub.com/tag/nitrogen-1118291" style="font-weight:bold;" target="_blank" title="Click to know more about NITROGEN">NITROGEN</a> in organic compound `=(0.034)/(0.25) xx 100 = 13.6`</body></html>