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Beers Law Remote Q
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Pre-Lab Activity 1. Which of the three samples appears to be the most concentrated? How can you tell? Number 1, because it absorbed the most amount of light. 2. Remember that the arrows in this car... toon are proportional to the light intensity. Calculate the fraction of light that makes it through each cuvette. Number 1: 1/4 Number 2: 2/4=1/2 Number 3: 3/4 3. The fraction of light that makes it through the sample is: ?. Write down a formula that relates this to the two observable quantities above (?! and ?). Then, write down a formula that allows you to calculate the percentage of initial light that gets absorbed by the sample, %T. %T = ?/?! x 100 4. Use the definition of absorbance above to calculate A1, A2, and A3. A1 = -log (1/4) =0.602 A2 = -log (2/4) = 0.301 A3 = -log(3/4) = 0.124 5. Two cuvettes with solution 2 from the first cartoon have been placed in series. How many arrows should be drawn under ?? in the situation below? What is the absorbance value that you would expect to measure? A= -2 log (%T) 2- log(65) = 0.187 [Show More]
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