6. In the molecular weight determination by the Dumas method, as illustrated below,several grams of an organic liquid were drawn into the bulb. The bulb was then immersed ina water bath at 87 C and kept there until all the liquid was vaporized and the air in the bulbwas replaced by the vapor. The tip was then sealed shut and the bulb removed from thebath, cooled, dried and weighed at room temperature. The weight of the bulb filled with thevapor was 36.127 g; the weight of the empty (evacuated) bulb was 35.427 g; the bulb'svolume was 200.0 mL; room temperature was 25°C; and the barometric pressure was720 mm Hg. Calculate the molecular weight of the organic liquid.

The mass of the bulb filled with vapor was 36.127 g;The mass of the empty (evacuated) bulb was…

Answered: 6. In the molecular weight…

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter13: Isolation Of Eugenol From Clov

Section: Chapter Questions

Problem 9Q

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In the molecular weight determination by the Dumas method, several grams of an organic liquid was drawn into a bulb. The bulb was then immersed in a water bath at 87 degrees C and kept there until all the liquid was vaporized and the air in the bulb was replaced by the vapor. The tip was then sealed shut and the bulb removed from the vapor was 36.127g; the weight of the empty (evacuated) bulb was 35.427g; the bulb’s volume was 200.0mL; room temperature was 25 degrees C, and the barometric pressure was 720 mm Hg. Calculate the molecular weight of the organic liquid. Calculate the molecular weight of the organic liquid.
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