Question

Post LaboratorY Qustions A colored salution had a large absorbance peak at 690 nm Use the visitle spectrum in your text or other reliable source to determine the color of this solution 2 A soft drink had a tertrazine also known as yellow #5 concentration of 1.75 x 10 M If a person drank two 12 ounce cans of this beverage for a vear (365 days). What mass of tartrazine would the person consume? Moleculer weight 534 g/mol for tartrazine. 3. If a person generated a Beer's law plot for yellow #5 at a wavelength of 500 nm would that person detemine the same value of e as was determined in this experiment at approximately 420 nm? Explain 4. If the diameter of the cuvette was increased to 2 cm, what would happen to absorbance readings? Explain 5 Why didn't we measure the absorbance of the stock solution? 6 A solution of a copper complex has a molar absorptivity of 57.8 L/mole at a wavelength of 600 am) A solution of this complex in a 1 cm cuvette had an absorbance of 0.760 at this wavelength. Calculate the molarity of the solution.

Answer 1

range of red colou is 630nm-700nm

So color at 690nm is RED.

Hence solution have RED colour