Melting point

    Page 1 of 50 - About 500 Essays
  • Melting Points Of Melting Point Experiment

    experiment one, are determining the melting points of different crystalline substances following a specific procedure. By finding the melting point of a crystalline substance, it helps determine what kind of compound it is as well as initiate the purity. A DigiMelt apparatus can be used to determine the melting point where a small amount of the the substance is packed into a capillary tube and heated slowly in the apparatus which includes a thermometer, a heating coil and a magnifying eyepiece for observing the substance. The two temperatures that need to be noted down is the first point at which liquid is formed on the crystalline substance, and second the point at which the crystalline substance turn into a clear liquid. These two…

    Words: 835 - Pages: 4
  • The Melting Point Of Urea And Trans-Cinnamic Acids

    The melting point of a substance is best described as the temperature at which a solid becomes a liquid (Bruice 2014). On the molecular level, when a compound melts the forces between the molecules become weaker. This is because when a substances heats up the kinetic energy between the molecules increase causing the molecules to vibrate. When the vibrations become strong enough for the molecules to move around and pass other molecules, the compound that is being heated up starts to melt and…

    Words: 756 - Pages: 4
  • Tartarin Melting Point

    Abstract: The melting point ranges for the substances Tartaric Acid, Acetaminophen, and Phenacetin, which are in powder form and white in color, was found and compared to their literature values to find their purity. The melting point range of a 9:1 mixture of Phenacetin and Tartaric acid was later found to show the effect an impure substance has on temperature. Melting point range for unknown three that was lastly tested was matched to Acetaminophen by comparing their melting points.…

    Words: 715 - Pages: 3
  • Melting Point Value

    A important tests were performed on the product to pressure the results: melting point value, percent yield, IR, and TLC. The experimental melting point value was found to be a range of 165-167 ºC being a little lower than the literature value for camphor, the intended product, was 175 ºC. The sharp range was resulted in a slightly pure product. The percent yield was lower than expected which can be the reason most of the product was lost during the extraction and almost completely sublimated…

    Words: 294 - Pages: 2
  • Acetanilide Extraction

    water at different stages. Other methods included filtration of mixtures, obtaining a compound’s melting point, and using infrared spectroscopy to analyze a compounds structure. Since no initial masses were given, percent yield cannot be determined. However, a relative analysis of the resulting masses of the compounds shows that the solution contained mostly aspirin, caffeine, and acetanilide in decreasing amounts, but since each compound contains the other compounds, this conclusion…

    Words: 841 - Pages: 4
  • Ethyl Cinnamate Lab Report

    Abstract: The purpose of this experiment was to extract ethyl cinnamate, cinnamic acid, and glucose, which are ingredients in the candy, Red Hots. The experiment began with 0.604 grams of a mixture of ethyl cinnamate, cinnamic acid, and glucose. The purity of glucose and ethyl cinnamate was measured through IR Spectroscopy. Melting point was used to determine the purity for cinnamic acid. Using the final amount for each ingredient, we determined the percent yields, which were 64.7% for glucose,…

    Words: 1350 - Pages: 6
  • Ice Melts Essay

    quite a few man-made ices, one being ice cubes. Glaciers have been around almost since the ice age, and they still haven’t melted. Though, human inventions and so on are resulting in large ice structures melting faster by polluting the air. There are a lot of ingredients in liquids that could affect how an ice cube melts. There are also certain points about…

    Words: 1292 - Pages: 5
  • Synthesis Of Trans-Cinnomine Synthesis

    attach themselves on opposite sides of the alkene functional group in a compound. In a syn-addition, the attach to the same side of the alkene. The reaction synthesis was completed by using a reflux system to produce to crude product, and a vacuum filter to yield a solid, crude product. Recrystallization of the solid product was performed, allowing the impurities of the solid to be removed while slowly crystallizing and the product. The melting point of the final recrystallized product was taken…

    Words: 976 - Pages: 4
  • Recrystallization Essay

    solution, eventually the percentage recovered was lower than it should be. A high percentage yield is considered between 70-80% of the purified product, in order to obtain this results we need to use little solvent as possible. On the other hand another factor that affected the results obtained was that we used a folded paper instead of fluted filter paper. A fluted filter paper is preferred over a folded filter paper because it has more surface area and also helps the filtration to take place…

    Words: 743 - Pages: 3
  • Does Sugar Affect The Freezing Of Water

    The Freezing point of water is 32° fahrenheit, But does anything affect the freezing point of water? The effect of salt and sugar lowering water’s freezing point is called Freezing Point Depression(FPD). When water freezes, its molecules slow down and “stick” together, and eventually slow down so much they stay in place and become a solid. However when salt or sugar is added, it “interferes with the formation of the crystalline bonds between water molecules that give ice its solidity”, Written…

    Words: 293 - Pages: 2
  • Previous
    Page 1 2 3 4 5 6 7 8 9 50

Related Topics:

Popular Topics: