The elemental analysis of an organic solid extracted from gum arabic (a gummy substance used in adhesives, inks, and pharmaceuticals) showed that it contained 40.0 percent by mass C, 6.7 percent by mass H, and 53.3 percent by mass O. A solution of 0.705 g of the solid in 31.9 g of the solvent diphenyl °℃ gave a freezing-point depression of 1.47 °C. Calculate the molar mass and molecular formula of the solid. (K, for diphenyl is 8.00- .) m Part 1 of 2 Round your answer to 3 significant digits. molar mass: Part 2 of 2 mol molecular formula: 2 AN 0 x10 X
The elemental analysis of an organic solid extracted from gum arabic (a gummy substance used in adhesives, inks, and pharmaceuticals) showed that it contained 40.0 percent by mass C, 6.7 percent by mass H, and 53.3 percent by mass O. A solution of 0.705 g of the solid in 31.9 g of the solvent diphenyl °℃ gave a freezing-point depression of 1.47 °C. Calculate the molar mass and molecular formula of the solid. (K, for diphenyl is 8.00- .) m Part 1 of 2 Round your answer to 3 significant digits. molar mass: Part 2 of 2 mol molecular formula: 2 AN 0 x10 X
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter15: Principles Of Chemical Reactivity: Equilibria
Section15.6: Disturbing A Chemical Equilibrium
Problem 2.1ACP: Freezing point depression is one means of determining the molar mass of a compound. The freezing...
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Transcribed Image Text:The elemental analysis of an organic solid extracted from gum arabic (a gummy substance used in adhesives, inks, and pharmaceuticals) showed that it
contained 40.0 percent by mass C, 6.7 percent by mass H, and 53.3 percent by mass O. A solution of 0.705 g of the solid in 31.9 g of the solvent diphenyl
°C
gave a freezing-point depression of 1.47 °C. Calculate the molar mass and molecular formula of the solid. (K, for diphenyl is 8.00- .)
m
Part 1 of 2
Round your answer to 3 significant digits.
molar mass:
Part 2 of 2
mol
molecular formula:
2
NO
0
x10
X
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