Answer
Please see the work below.
Work Step by Step
We know that
$i=\frac{\Delta T_f}{\Delta K_{fm}}$
We plug in the known values to obtain:
$i=\frac{2.6}{1.86(0.40)}=3.5$
Chemistry 12th Edition
by Chang, Raymond; Goldsby, Kenneth
Published by
McGraw-Hill Education
ISBN 10:
0078021510
ISBN 13:
978-0-07802-151-0
Chapter 12 - Physical Properties of Solutions - Questions & Problems - Page 554: 12.87
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