The 6 images below are from my lab manual for my 3rd year chem course. They aren
ID: 717024 • Letter: T
Question
The 6 images below are from my lab manual for my 3rd year chem course. They aren't in order so you will have to follow the page numbers on them. Can anyone answer the 8 questions on page 22?
CHEM 3000 3.0- Organic, Inorganic and Physical Chemistry Laboratory Experimental Procedure Operating Instructions for the Cary UV Spectrophotometer To start the experiment, complete the following preparation steps (1) On the main PC desktop open the Cary WinUV folder. Select the Scan shortcut; (2) Select the Setup button near the upper left corner of the application window; (3) Set the Start value to 650 and the Stop value to 360 (4) In the Options menu, activate the Individual data flag in the Display Options region; (5) Finish the Setup by selecting OK File Start Stop Setup... Print Figure 1. A Typical CARY-WinUV windovw (6) Dilute the supplied bromine stock solution 10 times (pipette 1 mL bromine solution into a 10 mL volumetric flask and add water to the mark). Transfer an adequate amount of diluted bromine solution into the 1 cm cuvette and place it into the cell compartment of the spectrophotometer; (7) Place the cuvette in position 1 with the frosted side of the cuvette facing you; (8) Select the Start button in the top centre portion of the application window; (9) Select the folder 3000-2012, enter a filename and select Save; (10) Enter a sample name and select OK (11) When the run has ended, select Finish in the pop-up window for next Sample Name (12) Move the mouse on to the UV spectrum at the 400 nm part of the curve; (13) Click on the right mouse button and choose Print XY point in the pop-up options; (14) Select Print in the lower left corner of the application window. Set printer HP LaserJet P1006, select OK from the Print box in the printing menu. Calculate the concentration of diluted bromine solution using 160 L Mole-1 cm-1 (base 10) at 400 nm as extinction coefficient. Report the concentration of bromine stock solution to your demonstrator 19 8Explanation / Answer
the devition is formed if graph is plotted outside this range which show spectroscopy doesn't follow the beers lambert law and resut show in another range.
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