Answered: What are some reasons why the melting…

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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What are some reasons why the melting point might be lower than the literature value? (Hint: Assume all solvent was removed from the recovered compounds)

Expert Solution

Step 1

A pure compound generally melts over a range of temperature. If the melting point of the sample is coming out to be lower than the literature value, there are the high chances of the sample being impure.

Step 2

Impurities which are soluble with the sample lowers the melting point of the sample.This is because they disrupt the structure of the solid and the repeating forces of interaction present within it. Due to this lesser amount of energy is now required to break the intermolecular forces present within the solid and to melt it, hence its melting point decreases.

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