purpose of the melting point experiment is to determine the melting point of a solid. The melting point of a solid is the initial temperature when a solid starts changing to a liquid and the final temperature when it completely liquefies. The identification of melting point is used as an experimental technic to identify compounds. When a compound is pure the temperature range is sharp, rather than broad that occurs in impure compounds. In this experiment we determined the melting point by heating a
Aim : In this experiment, aspirin is to be prepared via an esterification reaction and purified through recrystallization. The purity of the synthesised aspirin is determined through melting point determination. Introduction : One of the most widely used medicine is aspirin. It is best known for its pain relief for mild headaches, toothaches and muscle aches. It also acts as a nonsteroidal anti-inflammatory drug by providing relief to the swelling. Salicin, an active ingredient in salicylic acid
largest electronegativity difference between the atoms in the bond and the highest boiling points. The attractive forces between polar molecules are dipole forces. These attractive forces of dipoles increase the boiling point. The stronger these forces are, the more the compound must be heated to overcome the attractions, therefore, the higher the melting and boiling points. As a compound is heated to its melting point, its lattice breaks and it dissolves. The purpose if
SEMESTER 1 UDEC1164 ORGANIC CHEMISTRY Name: Cheong Wai See Student ID: 1404057 Practical Group: 1 Title of Experiment: Name of Tutor: Dr. Mohammod Aminuzzaman Date: 24 February 2016 Tiltle: Nitration of Methyl Benzoate Objectives: -To prepare methyl-3-nitrobenzoate from nitration of methyl benzoate by electropilic aromatic substitution. -To calculate the percentage yield and get the melting point of methyl-3-nitrobenzoate. Introduction: Benzene contains compounds have special properties that make
Recrystallization is one of the most well-known and commonly used methods when trying to purify solids. Recrystallization is the process that involves dissolving the solids in an appropriate solvent at elevated/heated temperature and allowing the crystals to re-form once the solution is cooled. This process removes any impurities that may be in the solution. At first, the process of recrystallization may seem intimidating and difficult to understand at first, but in reality it is easier to understand
is one of the most valuable metals. The average price of a kilogram of ruthenium is $13,548 ($420 per troy ounce). You have to pay $500 per kilogram of indium. Indium is also the tenth most valuable metal in the world. One of the metals for the experiment was zinc. Zinc oxide is a common zinc compound that forms when metallic zinc is exposed to air. Zinc also has many alloys. One of the many alloys zinc has is brass. Like zinc brass dose not rust. It slightly loses its color sometimes, but it can
The changing attitude was aptly represented by the coinage, ‘Sapere Aude’, meaning ‘dare to know’. One such person was Mr. Benjamin Franklin, who asked questions and went about answering them too. These questions were asked by him and answered at a point when, even though there was a considerable growth in the area of science, the phenomenon of lightning was so deeply sheltered under the umbrella of myths that it was something almost impossible to question. Each religion and sect had their own explanations
Review of literature-Bubble-ology We would be trying to find out which mixture makes the best bubble solution so the bubble will last longer in the air.For the experiment We will use detergent corn syrup glycerin and water.We will used the glass jars to put the bubble solutions.The bubble solutions will be tested outside.We we blow the bubble we will catch it with the want we will make with the pipe cleaners.Finally,while we are testing the bubbles at the same time we will be recording the data
Experiment 3: Cryoscopic Determination of Molecular Weight Aim: The primary objective of the experiment is to calculate the total molecular mass of the compound benzoic acid in a predetermined amount of cyclohexane. Introduction: One of the key concepts in this experiment is the term freezing point depression. The definition of this phrase is that when a solute is dissolved into a solvent, their collective boiling point will be less than that of the original boiling point of the solvent. This incidentally
Polymers is a class of material that is made up of long molecular chains. The following section will discuss the morphology of neat (pure compound) polymers. Morphology is the study of shape, form and structure of a material on a multidimensional level. The morphology of a polymer gives rise to its properties and explains why polymers behave differently for added clay nanoparticles. Polymer Molecular Structure Polymers consist of small repeating structural units called monomers. Likewise, monomers