"Preparation of aspirin and determination of the melting point" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 5 of 50 - About 500 Essays
  • Good Essays

    RECRYSTALLIZATION AND MELTING POINT DETERMINATION OF BENZOIC ACID ANSWERS TO QUESTIONS 1. How does the use of fluted filter paper hasten filtration? Why is it advisable to place a small piece of wire between the funnel and the mouth of the flask during hot filtration? Fluted filter paper is effective in preventing crystal formation in the filter paper. It is also often used in filtering hot saturated solution used during crystallization. One major advantage of a fluted filter is that it increases

    Premium Filter paper Solvent Filters

    • 485 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Aspirin

    • 480 Words
    • 2 Pages

    effects for some people‚ yet it is safe enough to be sold without a prescription. Because it is easy to prepare‚ aspirin is one of the most inexpensive drugs available. It is produced in vast amounts. In fact‚ industry makes 43‚000‚000 pounds of the drug every year. This microscale experiment will permit you to make an amount of aspirin equivalent to about 1/2 of that found in an aspirin tablet. Purpose: To synthesize acetylsalicylic acid on a microscale basis. Equipment / Materials: |salicylic

    Premium Aspirin Acetic anhydride Salicylic acid

    • 480 Words
    • 2 Pages
    Good Essays
  • Good Essays

    ABSTRACT Determining the melting point of a solid organic compound is the easiest way to identify the compound and determine its purity at the same time. For actual samples of compounds‚ the melting will occur over a range of temperatures making the melting points into a melting “range”. The difference between the temperature at which the sample begins to melt and the temperature at which it finishes melting‚ or the magnitude of the melting range‚ is a very important criteria of determining the

    Premium Freezing-point depression Melting point Temperature

    • 410 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Synthesis of Aspirin

    • 1618 Words
    • 7 Pages

    specific amount of salicylic acid into the same amount of aspirin that was high in purity. Furthermore‚ the other objectives were to enable students to conduct the synthesis of aspirin‚ reinforce skills or recrystallisation and the technique of melting point determination. The amount of each compound should be the same because there is a 1:1 ratio between them. The purity of the synthesized aspirin was measured by determining its melting point and percent yield. Soluble impurities increase the range

    Premium Aspirin Acetic acid Carboxylic acid

    • 1618 Words
    • 7 Pages
    Good Essays
  • Better Essays

    Aspirin Synthesis

    • 2090 Words
    • 9 Pages

    and 3: Synthesis of Aspirin and Determination of Melting Point A. Abstract Aspirin is the common name for the compound acetylsalicylic acid‚ widely used as a fever reducer and as a pain killer. The first part of the experiment aims to synthesize aspirin from the reaction of salicylic acid with acetic anhydride with the aid of phosphoric acid as a catalyst. The second part of the experiment aims to assess the purity of aspirin through the determination of its melting point and comparing it to

    Free Aspirin Acetic acid Carboxylic acid

    • 2090 Words
    • 9 Pages
    Better Essays
  • Better Essays

    #1: THE PURITY AND PURIFICATION OF SOLIDS MELTING POINTS ABSTRACT Melting points of different mixtures of naphthalene and biphenyl were examined in this lab. Samples of these various mixtures were collected and tested by different individuals in the lab in order to find the eutectic point of biphenyl. Unknown substances were then tested using the mixture melting point method in order to determine their identities. INTRODUCTION The melting point of a solid is the temperature where the

    Premium Chemical substance Mix Temperature

    • 1187 Words
    • 5 Pages
    Better Essays
  • Good Essays

    VI: Conclusion: The melting point of a compound is the temperature at which the solid is in equilibrium with its liquid. A solid compound changes to a liquid when the molecules acquire enough energy to overcome intermolecular forces holding them together in an crystalline lattice structure. The melting point range is defined as the span of temperature from the point at which the crystals first begin to liquefy to the point at which the entire sample is liquid. This data can be tabulated experimentally

    Free Solid Liquid Temperature

    • 439 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    and Purification of Solids Melting Points CH-337 Abstract: The purpose of this experiment was to find the eutectic point for the mixture of naphthalene and biphenyl. This was done by measuring the melting point of both pure substances and five mixtures of different ratios. The purpose of the second section was to identify an unknown sample by measuring its melting point and mixing it with two known substances and comparing them. The results suggest that the eutectic point is closest to the weight

    Free Chemical substance Mixture Mix

    • 880 Words
    • 3 Pages
    Powerful Essays
  • Better Essays

    Measuring the Melting Points of Compounds and Mixtures Introduction This exercise dealt with the melting points of pure mandelic acid and benzoic acid. The eutectic temperature and composition of mandelic and benzoic acid mixtures were determined. And finally‚ an unknown was identified by its mixtures and melting point. The melting point of a compound is used by organic chemists not only to identify the compound‚ but also to establish its purity. To determine the melting point two temperatures

    Premium Liquid Chemical compound Chemical substance

    • 1111 Words
    • 5 Pages
    Better Essays
  • Powerful Essays

    aspirin lab

    • 4543 Words
    • 19 Pages

    Equipment Safety Containers Measuring Devices Other Equipment Procedure Synthesis of Aspirin Crystalizing the Aspirin Recrystallizing the Crude Aspirin Finding the Melting Point Range Safety Precautions Acetic Anhydride Sulphuric and Salicylic Acid Heating Observations Mass of Aspirin Synthesized Melting Point Calculations Percentage Yield Maximum Yield Crude Product Final Product Melting Range Percentage Error Crude Product Final Product Conclusion and Analysis Discussion

    Free Aspirin Acetic acid Sulfuric acid

    • 4543 Words
    • 19 Pages
    Powerful Essays
Page 1 2 3 4 5 6 7 8 9 50