Answer Happy

< Prev Ne Experiment 3 - Qualitative and quantitative Analysis of Food Dyes Evaluation Question 1 You will now create a calibration graph to be used determine the concentration of Red #40 in the drink. Download Graph for Red #40 [To be submitted] The simulation below contains 5 standard solutions of Red #40. The undiluted concentration of the red dye is 3.2x10-5 M. As with the blue dye, the solutions are in concentrations of 100%, 80%, 60%, 40% and 20%. Use the data provided by the simulation to fill out the table and create a calibration graph for Red #40. Once you have completed the graph and table, you can use them to determine the concentration of dye in your drink You have correctly answered this question. Good Job! Please print this page to be turned in with your completed calibration graph. If you are unable to print, you can take a screen capture of this page by following the instructions below: 1. Click the 'PrntScrn' button on your keyboard. (The image of the screen will be copied to the clipboard.) 2. Open a new document in MS Word and press CTRL + V to paste the image into your document, 3. You may then save the document to print when you come to lab. 1 dilution Absath Absorbance
Wavelength (nm) ROLAB FIRST RED 640 Your drink sample has the following absorbance reading: 0.991 at the analytical wavelength 505nm Using your graph, determine the molar concentration of Red #40 in your drink sample. (Note: please enter your answers to 2 significare figures, for very small numbers, you may use scientific notation: le. 0.00023 can be entered as 2.3e-4 with no spaces). The concentration of Red #40 in your drink is: M Check Anwww Your answer is correct! Please print this page to be turned in with your completed calibration graph.
1/1 - 100% + Experiment 3: Colourimetry - Online Tutorial Red #40 Calibration Graph and Concentration Table - TO BE TURNED IN TO YOUR TA Name Red #40 Calibration Graph
0 02 04 06 08 10 Abs Sample Water Blank Table1: Concentration and Absorbance values for Red #40 % Concentration Vol. Dye Concentration (M) Vol. Water Dye (Red #40) 0 0 10 0 100% 10 mL Oml 80% 60% Standard 1 Standard 2 Standard 3 Standard 4 Standard 5 Unknown 40% 20%
T Paused Update You will now create a calibration graph to be used determine the concentration of Red #40 in the drink. Download Graph for Red #40 [To be submitted) The simulation below contains 5 standard solutions of Red #40. The undiluted concentration of the red dye is 3.2x10-5 M. As with the blue dye, the solutions are in concentrations of 100%, 80%, 60%, 40% and 20%. Use the data provided by the simulation to fill out the table and create a calibration graph for Red +40. Once you have completed the graph and table, you can use them to determine the concentration of dye in your drink. You have correctly answered this question. Good Job! Please print this page to be turned in with your completed calibration graph. If you are unable to print, you can take a screen capture of this page by following the instructions below: 1. Click the 'PrntScrn' button on your keyboard. (The image of the screen will be copied to the clipboard.) 2. Open a new document in MS Word and press CTRL + V to paste the image into your document. 3. You may then save the document to print when you come to lab. 1.270 dilution Abst The measurement is finished, 0.00 please remove the old vial before inserting the new one 20 0.267 Absorbance 0 40 O.SOS 60 0.796 10 1.025 100 1.270 Wavelength (nm)