Beer’s Law Pre-Lab Worksheet PDF

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Allura Red prelab...

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Part A Download the Beer’s Law Pre-Lab Worksheet in the ‘Worksheets’ section of the course content section. Complete the worksheet and submit it to the assignments folder titled ‘Beer’s Law Pre-Lab’ prior to the beginning of your lab section. Beer’s Law Pre-Lab Worksheet https://phet.colorado.edu/sims/html/beers-law-lab/latest/beers-law-lab_en.html

CONCENTRATION PRE-LAB ACTIVITY Part 1:How to Use 1. Click the link above to access the simulation. 2. Select the concentrations window. 1. To add water to the tub, pull the knob above the tub. 2. To remove water from the tub, pull the knob near the bottom of the tub. 3. You can change the solute you add in the top right corner of the screen. 4. You can add solute in the liquid or solid form in the top right corner of the screen. 5. Move the crosshair connected to the box labeled “concentration” over the solution to analyze the concentration of the solution. 6. To reset the simulation, click the orange button with the round arrow on the bottom right corner of the screen. Part 2: Concentration Activity: 1. Select the drink mix as your solution, empty the water in the container, and add 100 mL of the solution to the container. Measure and record the concentration of your stock solution in Table 1. 2. Add increments of 100 mL of water from the tap to the container till the volume of the solution 1 L, and record the concentration in Table 1 each time you add 100 mL of water. Table 1: Concentration of an Increasingly Dilute Dye Solution Volume Total Concentration 100 mL (initial concentration) 200 mL 400 mL 600 mL 800 mL 1000 mL

Question 1: How does the concentration of the dye solution change as you add water to the solution?

3. Reset the simulation. 4. Select the solution of drink mix, and add increments of 100 mL of drink mix to the 500 mL of water till you reach 1 L of solution. Recording the initial concentration of water, and after each increment of 100 mL of drink mix. Record your data in Table 2. Table 2: Concentration of an Increasingly Concentrated Dye Solution Volume Total Concentration 500 mL (initial concentration) 600 mL 800 mL 1000 mL Question 2: Why doesn’t the concentration of dye this solution ever get as high as the initial concentration of dye from table 1?

Question 3: How many milliliters of water would you need to add to stock solution 100 mL of 5.5 M drink mix to create a 1.0 M solution? (Show calculations) and confirm your answer by making the solution in the simulator. Include a screen shot of your final solution....