The Determination of Boiling and Melting Points in an Organic Compound

The Determination of Boiling Points and Melting Points

Introduction: An unknown warning arouse be identified through certain orders, wizard of which would be accounting its turn and resolve points. The boiling point of a liquid is a physical characteristic of a chemical substance as is the thawing point a solid. Distillation is the method that will be used in this experiment to identify an unknown liquid and solid.

Objectives
1. Identify the unknowns by its melting and boiling points.
2. Learn to set up a proper distillate apparatus.

Theory: Intermolecular forces play a large depart in identifying unknowns when conducting a distillation experiment. The stronger the bond, the taller boiling and melting points will be. This is because it takes a greater amount of kinetic expertness to break apart the molecules, allowing them to boil off. The strongest of these is called the hydrogen-bond. These types of bonds have a postgraduate electronegativity, making them very stable and more difficult to break. Therefore, the boiling points and melting points are greater because more energy (through heat) is ask to break the bonds. The van der Waal forces will also aid in the identification of an unknown. These forces are dipole-dipole and dispersion, the latter being the weakest of the intermolecular forces.



Although non as strongly bonded as the hydrogen bond, the it takes a high amount of energy to break them apart, causing high melting and boiling points. Molecular weight influences how strong the intermolecular forces can be. This because as the molecular weight increases, the surface area increases as well, making it more difficult to break the molecules apart (creating a stronger bond and a higher boiling and melting point).

observational: The distillation apparatus was assembled as per page 2 of this science laboratory report. An unknown solid, sample B, was collected and placed into capillary pipe. This tube was placed into the middle of slot of the mel-Temp. mel-Temp was turned on to a...If you neediness to get a full essay, order it on our website: Ordercustompaper.com



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