A compound has the following composition: C=93.75% and H=6.25%. When 0.320g of this compound is dissolved in 10.0g benzene (Kf= 5.12oC/ molal, fp= 5.50oC) the solution has a fp= 4.20oC. Calculate a) the empirical formula and b) the molecular formula.
A compound has the following composition: C=93.75% and H=6.25%. When 0.320g of this compound is dissolved in 10.0g benzene (Kf= 5.12oC/ molal, fp= 5.50oC) the solution has a fp= 4.20oC. Calculate a) the empirical formula and b) the molecular formula.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A compound has the following composition: C=93.75% and H=6.25%. When 0.320g of this compound is dissolved in 10.0g benzene (Kf= 5.12oC/ molal, fp= 5.50oC) the solution has a fp= 4.20oC. Calculate a) the empirical formula and b) the molecular formula.
Expert Solution
Answer
The empirical formula is C5H4
The molecular formula = n (empirical formula) = 2 (C5H4) = C10H8
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