[화학공학기초실험A+] 물리화학실험 영문결과레포트 - 분별결정 (Fractional Crystallization)

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

1. Result

The weight of used Na_2 Cr_2 O_7∙2H_2 O 9g.
The mole of used Na_2 Cr_2 O_7∙2H_2 O 0.03020mol.
The weight of used KCl 5g.
The mole of used KCl 0.06707mol.
The weight of obtained K2Cr2O7 after 1st precipitation 7.577g.
The mole of obtained K2Cr2O7 after 1st precipitation 0.02575mol.
The weight of obtained NaCl after 2nd precipitation 2.801g.
The mole of obtained NaCl after 2nd precipitation 0.04793mol.
Theoretically calculated weight of K2Cr2O7 7.852g.
Theoretically calculated weight of NaCl 1.469g.
The yield of K2Cr2O7 96.50%
The yield of NaCl 190.7%

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2. Discussion
① Error on incorrect temperature
To calculate the exact theoretical value, the temperature of the boiling or cooled solvent should be measured and the solubility of the solution at that temperature should be used. In this experiment, however, we assumed that temperature was 100℃ when simply boiled, and 0℃ when cooled.

참고 자료

Chemical Engineering & Polymer Basic Experiments (2020), Sungkyunkwan University School of Chemical Engineering, p25-29
Pubchem – https://pubchem.ncbi.nlm.nih.gov/compound/Potassiumdichromate#secti
on=Solubility