2) In an experiment to determine the molar mass of dichlorobenzens C6H4C12 using freezing point depression of solvent cyclohexane, a student uses 10 mL or cyclohexane (density 0.779 g/ ml) and obtains an average freezing point of 5.75 degrees Celsius. She graphically determines the new freezing point to be 2.8 degrees Celsius by setting equation of 2 lines equal to each other. What is her ATf? If she uses a total of 0.2301 grams of dichlorobenzene what is her calculated molecular weight for the solute? What is % error from actual molecular weight of solute? Is this a reasonable result?
2) In an experiment to determine the molar mass of dichlorobenzens C6H4C12 using freezing point depression of solvent cyclohexane, a student uses 10 mL or cyclohexane (density 0.779 g/ ml) and obtains an average freezing point of 5.75 degrees Celsius. She graphically determines the new freezing point to be 2.8 degrees Celsius by setting equation of 2 lines equal to each other. What is her ATf? If she uses a total of 0.2301 grams of dichlorobenzene what is her calculated molecular weight for the solute? What is % error from actual molecular weight of solute? Is this a reasonable result?
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
Chapter11: Properties Of Solutions
Section: Chapter Questions
Problem 132CP: A forensic chemist is given a white solid that is suspected of being pure cocaine (C17H21NO4, molar...
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