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A student placed about 1 cm of freshly recrystallized loosely packed solid into a melting-point capillary tube. The student noted that the solid melted 30 degrees lower than expected and the solid seemed to jump/separate in the tube as the temperature increased in the melting point apparatus. When the student measured the melting point the following day with less solid that was more tightly packed, the melting point was at the literature value. Explain what all went wrong with the student's first sample

A student placed about 1 cm of freshly recrystallized loosely packed solid into a melting-point capillary tube. The student noted that the solid melted 30 degrees lower than expected and the solid seemed to jump/separate in the tube as the temperature increased in the melting point apparatus. When the student measured the melting point the following day with less solid that was more tightly packed, the melting point was at the literature value. Explain what all went wrong with the student's first sample

Chemistry
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 student placed about 1 cm of freshly recrystallized loosely packed solid into a melting-point capillary tube. The student noted that the solid melted 30 degrees lower than expected and the solid seemed to jump/separate in the tube as the temperature increased in the melting point apparatus. When the student measured the melting point the following day with less solid that was more tightly packed, the melting point was at the literature value. Explain what all went wrong with the student's first sample

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