[일반 화학 실험 영어 레포트] Molar Mass of a Solid

소개

"[일반 화학 실험 영어 레포트] Molar Mass of a Solid"에 대한 내용입니다.

목차

1. Introduction
2. Experimental procedure
3. Results
4. Discussion
5. Laboratory Question

본문내용

Introduction:
A solution, also known as homogeneous solution contains solvent and solute. The addition of solute in the pure solvent results in change in 4 physical properties. Such properties are boiling point elevation, freezing point depression, decrease in vapor pressure and increase in osmotic pressure. These are also known as colligative properties, and the change in such properties are purely dependent on the amount of solute added to the solution. This is also represented in the graph inserted below:

The presence of solute results in inhibition of the movement of solvent molecules, hence, less molecules would be transformed into the vapor state, resulting in decrease in vapor pressure. As the pressure is decreased, this causes boiling point elevation as the pressure needs to be increased. Moreover, the presence of the solute also causes freezing point depression as the energy of the solvent molecules need to be lower to increase intermolecular forces between the molecules.

참고자료

· 11.4 Colligative Properties. Rice University, <https://opentextbc.ca/chemistry/chapter/11-4-colligative-properties/>
· Laboratory Manual for Principles of General Chemistry. Ninth Edition, J.A. Beran, John Wiley & Sons, Inc. (10th Edition), pg. 189-198