How is the purity of the aspirin assessed in this experiment?Question 1Answerby NMR spectroscopyfrom its solubilityby infrared spectroscopyfrom the colour produced by reaction with Fe3+from its melting point

Iron(III) chloride is used to test the purity of your aspirin. Why does salicylic acid reacts with iron(III) ions, Fe3+. Group of answer choicesimpure aspirin is highly concentrated with aspirinSalicylic acid contains a phenol groupaspirin reacts with any aqueous solutioniron and aspirin make violet

Time left 23:51:06Question 1Not yet answeredMarked out of 2.00Flag questionQuestion textIn part B of this experiment, you will quantitatively determine the amount of aspirin, phenacetin and caffeine in an "analgesic tablet" by UV-vis absorption spectroscopy.A student is asked to perform the following procedure which is similar to the preparation of the UV-vis absorption sample in part B of PHY6:1.       Place unknown sample ‘X’ in a 200 ml volumetric flask, add 50 ml of water and 10 ml of 0.5 M KOH.  Shake until the tablet breaks up and all crystalline material has dissolved.  Dilute to 200 ml with methanol. 2.       Pipette 1 ml of this solution into a 40 ml volumetric flask and make up to 40 ml with methanol.  A blank should be prepared in the same way, which contains all reagents except the tablet.3.       Record the UV-vis absorption spectrum of this solution over the range 380-220 nm, using the blank solution to set the baselineIf, 6.83 x 10-4 mol/L of aspirin is present in the diluted sample solution used to obtain the UV-vis absorption spectrum, what is the concentration of aspirin in the undiluted stock solution?

The relative purity of the crystals can be assessed by several methods. Which of the following is not one of those methods?Group of answer choicesyieldnuclear magnetic resonancevisual inspectionmelting point

The relative purity of the crystals can be assessed by several methods. Which of the following is not one of those methods?Group of answer choicesyieldvisual inspectionnuclear magnetic resonancemelting point

A second-year chemistry student is asked to make up a 500.0 mL sample of 0.057 M solution of aspirin to study the rate of hydrolysis of aspirin in the digestive system. Molar mass of Aspirin, acetylsalicylic acid, C9H8O4 = 180.17 g mol-1. (a) Calculate the mass (in grams) of aspirin that the student would need to weigh out. Provide your numerical answers and units.