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 in a water bath at 87°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 bath, cooled, dried and weighed at room temperature. The weight of the bulb filled with the vapor was 36.127 g the weight of the empty (evacuated) bulb was 35.427 g; the bulb's volume was 200.0 mL; room temperature was 250C; and the barometric pressure was 720 mm Hg. Calculate the molecular weight of the organic liquid.
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 in a water bath at 87°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 bath, cooled, dried and weighed at room temperature. The weight of the bulb filled with the vapor was 36.127 g the weight of the empty (evacuated) bulb was 35.427 g; the bulb's volume was 200.0 mL; room temperature was 250C; and the barometric pressure was 720 mm Hg. Calculate the molecular weight of the organic liquid.
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter14: Chemical Equilibrium
Section: Chapter Questions
Problem 14.74QE: Lead poisoning has been a hazard for centuries. Some scholars believe that the decline of the Roman...
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