[화학공학기초실험A+] 물리화학실험 영문결과레포트 - 어는점 내림 (Freezing-Point Depression)

소개글

[화공및고분자기초실험A+] 성균관대학교 화공및고분자기초실험 영문 결과레포트입니다.
관련 이론 등 예비레포트 내용은 포함되어 있지 않습니다.
실험 데이터 처리 및 분석 위주로 작성된 레포트입니다.

목차

1. Result
2. Discussion
3. Summary
4. Reference

본문내용

Using above Time – Temperature table, we can draw three cooling curves for each cyclohexane, solution 1, and solution 2. For all the cooling curves below, two or three arbitrary intervals were set to estimate the state of the material for each section. Also, on the basis of the division, we can obtain the freezing temperature from the cooling curve by extrapolating. The blue, orange, and green colors each mean the curve of liquid phase, liquid and solid mixed, and solid phase.

Theoretically, the freezing point of pure cyclohexane should be horizontally on the graph. In this graph, the middle section, orange line should have been, but it wasn’t. The freezing point could not be specified as the temperature continued to change over time, indicating a small slope with no constant temperature. For this reason, the freezing point was decided by solving two simultaneous equations at both ends of liquid & solid phase to minimize the error.

참고 자료

Atkins, P. and de Paula, J. (2020) Atkins’ Physical chemistry. 11th Edition, Oxford University Press, p815, Table 0.1
Chemical Engineering & Polymer Basic Experiments (2020), Sungkyunkwan University School of Chemical Engineering, p21-24
Raymond Chang, Jason Overby (2019) General Chemistry. 13th Edition, McGrawHill Education, p530, Table 12.2ㅓ