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Spectrophotometric analysis of a commercial Aspirin tablet
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What is the aim of the spectrophotometer experiment 3?
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Experiment 3: SPECTROPHOTOMETRIC ANALYSIS OF ASPIRIN fAim The aim of this experiment was to use the Spectrophotometer to determine the milligrams of acetylsalicylic acid (aspirin) in a commercial aspirin product and to compare the mass of acetylsalicylic acid in various commercial aspirin products.
What is the purpose of the spectrophotometer experiment?
The purpose of this lab experiment is to understand the uses of spectrophotometry. This experiment concentrates on the uses of the spectrophotometer, and using this instrument to specifically determine the absorption spectrum of a cobalt chloride solution, a galactose solution, and to determine an unknown concentration of a galactose solution.
How does a spectrophotometer measure intensity?
Spectrophotometers measure intensity as a function of the wavelength of the light source. What is the basic principle of spectrophotometer? Spectrophotometry is a procedure for determining how much light is reflected by a chemical material by measuring the strength of light as a light beam travels through the sample solution.
What are the components of spectrophotometer?
The basic spectrophotometer instrument consists of a light source, a digital display, a monochromator, a wavelength sector to transmit a selected wavelength, a collimator for straight light beam transmission, photoelectric detector and a cuvette to place a sample. The intensity of light is symbolized as l 0 measure the number of photons per second.
What are some real-life applications of spectrophotometry?
It can also be classified into two types based on the range of light source wavelengths like IR spectrophotometer and UV-visible spectrophotometer. Some major real-life applications of spectrophotometry in various fields are laundry soap, carpeting and production of small parts such as toys or intricate machinery.
How do you measure the mass of an aspirin tablet?
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Obtain one commercial aspirin tablet and break it into two approximately equal pieces. If the tablet crumbles when split, crush the entire tablet and divide the crushed tablet in two equal halves. Record the exact mass of each piece (or crushed halve) on your report sheet or in your notebook.
What was the percent by mass of aspirin in the tablets?
WARNING! Very long answer! The aspirin was 99.6 % pure. Step 1. Start with the balanced equation. C9H8O4 aspirin + 2OH- → C7H5O- 3 salicylate + C2H3O- 2 acetate + H2O Step 2. Calculate the moles of NaOH used.
What is the concentration of iron in aspirin solution?
Then, 5.0mL of this aspirin tablet solution was transferred to a 100mL flask and diluted to the mark with a 0.02M Iron (III) solution. This solution was labelled “unknown”
How do you dilute aspirin tablets?
An unknown solution was made by placing an aspirin tablet in 10mL of a 1M NaOH solution and heating. This solution was then transferred to a 250mL flask and filled to the mark with DI water. Then, 5.0mL of this aspirin tablet solution was transferred to a 100mL flask and diluted to the mark with a 0.02M Iron (III) solution.
How to calculate the purity of aspirin?
The aspirin was 99.6 % pure. Step 1. Start with the balanced equation. C9H8O4 aspirin + 2OH- → C7H5O- 3 salicylate + C2H3O- 2 acetate + H2O Step 2. Calculate the moles of NaOH used. Moles NaOH = 0.050 00L NaOH × 0.500 mol NaOH 1L NaOH = 0.025 00 mol NaOH Step 3.
Who uploaded synthesis of aspirin lab report?
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Synthesis Of Aspirin Lab Report Uploaded by: JasmeetSingh 0 0 December 2019 PDF Bookmark Embed Share Print Download This document was uploaded by user and they confirmed that they have the permission to share it.
How is aspirin synthesized in lab?
The main objective of the synthesis of aspirin lab was so produce aspirin (acetylsalicylic acid) through the reaction of salicylic acid and acetic anhydride. The methods used included recrystallization and scratching to produce a precipitate, which was then filtered to remove any excess moisture.
What is the history of aspirin?
It has been present for over one hundred years and is one of the most widely used medications in the world. The main objective of the synthesis of aspirin lab was so produce aspirin (acetylsalicylic acid) through the reaction of salicylic acid and acetic anhydride.
What is the percent yield of aspirin synthesis?
After the limiting reactant was determined, the theoretical yield of aspirin was calculated at approximately 1.97g. The actual yield was only around 0.67g, producing a percent yield of 34.3%. These results show that the methods used were only partially successful at achieving the goal of the experiment (synthesising aspirin).
What is the objective of the aspirin experiment?
The objective of this experiment is to enable us to conduct the synthesis of aspirin, reinforce the skills of recrystallisation and reinforce the technique of melting point determination. It is carried out to form ester from an acid and an alcohol.
How do you break aspirin in half for a lab report?
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9. Obtain one commercial aspirin tablet and break it into two approximately equal pieces. If the tablet crumbles when split, crush the entire tablet and divide the crushed tablet in two equal halves. Record the exact mass of each piece (or crushed halve) on your report sheet or in your notebook.
What is the synthesis of aspirin under laboratory conditions?
This experiment is about the synthesis of aspirin under laboratory conditions. Aspirin is prepared by reacting salicylic acid and acetic anhydride; in the presence of sulfuric acid. After fully dissolving the salicylic acid with acetic anhydride, the solution is cooled and cold water is then added.
What are the main procedures for the preparation of aspirin?
The main procedures are preparation of aspirin, recrystallisation of aspirin and lastly determining the melting point of the aspirin. For preparation of Aspirin, acetic anhydride is added to the measured amount of salicylic acid. Sulphuric acid is added and heated for a short period to complete reaction.
What should I do if I find aspirin in my sample?
Return items to the Stockroom. Make sure you have recorded information on the sample you studied, including the manufacturer and brand name and the amount of aspirin reportedly in each tablet from the aspirin packet label, which can be found posted on the Stockroom door.
How do you calculate the percentage yield of aspirin?
It is calculated by adding the moles of salicylic acid and acetic acid. On the other hand, the percentage yield of aspirin is obtained by dividing the actual yield and theoretical and multiplying by 100.
References:
Experiment 3: SPECTROPHOTOMETRIC ANALYSIS OF …
Spectrophometric Analysis of Aspirin – James Madison …
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Questions just answered:
What is the purpose of the spectrophotometer experiment?
How does a spectrophotometer measure intensity?
What are the components of spectrophotometer?
What are some real-life applications of spectrophotometry?
What is the aim of the spectrophotometer experiment 3?
How is aspirin synthesized in lab?
What is the history of aspirin?
What is the percent yield of aspirin synthesis?
What is the objective of the aspirin experiment?
Who uploaded synthesis of aspirin lab report?
What is the synthesis of aspirin under laboratory conditions?
What are the main procedures for the preparation of aspirin?
What should I do if I find aspirin in my sample?
How do you calculate the percentage yield of aspirin?
How do you break aspirin in half for a lab report?
What was the percent by mass of aspirin in the tablets?
What is the concentration of iron in aspirin solution?
How do you dilute aspirin tablets?
How to calculate the purity of aspirin?
How do you measure the mass of an aspirin tablet?
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