Long Lab Report

Shifa Sayeed can you check if this is all in past tense and if it has personal pronouns? The purpose of this experiment was to observe and thoroughly analyze how different substances of dissimilar intermolecular forces acted in different scenarios of evaporation, evaporative cooling, and boiling. In the lab, the three substances tested and compared were Acetone, Acetic Acid, and Propanol.

Firstly, intermolecular forces and strengths of different chemical substances could be identified using valence shell electron pair repulsion shapes and prior knowledge of various kinds of intermolecular forces: London Dispersion, Dipole-Dipole, and Hydrogen bonding. Knowing this, Acetone was seen to possess London Dispersion and Dipole-Dipole forces. Propanol was seen to possess London Dispersion, Dip0le-Dipole forces, and Hydrogen Bonding. Acetic Acid was seen to possess Hydrogen Bonding and Dipole-Dipole forces. Overall,

When each drop of chemical was carefully squeezed onto the surface of the lab table, the time of evaporation was timed carefully, capturing the exact times each of the substances completely finished evaporation. As a result of this, Acetone evaporated instantly, within just less than a minute, 57 seconds. Propanol and Acetic Acid followed a while afterward, with Propanol evaporating in 8 minutes and 40 seconds and Acetic Acid in 30 minutes and 43 seconds. The distinct and differing times of evaporation of all three chemicals represented the differences in the intermolecular forces that each of the chemicals possesses within their molecules and how they cause each substance to behave when left out to evaporate. Weaker intermolecular forces do not take long to fully evaporate because of the lack of energy required to weaken their bonds, hence Acetone takes less time to evaporate compared to Propanol and Acetic