(a) Show that the equation AT, = -k;mB gives MB = -k,wg/ (AT,WA), where wg and wa are the masses of B and A in the solution. (b) Plot the calculated molecular weights vs. W and extrapolate to zero concentration to find the true molecular weight.
(a) Show that the equation AT, = -k;mB gives MB = -k,wg/ (AT,WA), where wg and wa are the masses of B and A in the solution. (b) Plot the calculated molecular weights vs. W and extrapolate to zero concentration to find the true molecular weight.
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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Transcribed Image Text:(a) Show that the equation AT; = -k;mB gives MB = -k,wB/
(AT,WA), where wB and wa are the masses of B and A in the
solution. (b) Plot the calculated molecular weights vs. W and
extrapolate to zero concentration to find the true molecular
weight.
Transcribed Image Text:12.7 Let W be the weight percent of maltose in an aqueous so-
lution. The following freezing-point depressions are observed
for maltose(aq) solutions:
3.00
6.00
9.00
12.00
AT,°C
-0.169
-0.352
-0.550
-0.765
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