QUESTIONS Indicate how each of the following would affect the value of the absor

Question

QUESTIONS Indicate how each of the following would affect the value of the absorbance (too low, too high, no effect) of the indicated solution. Explain your answers. 1. A student prepares solution A using a 100.00 ml volumetric flask that is initially wet. a. No effed b. A student rinses the 10.00 mL pipet only with DI water in the preparation of D (but does the rest of the procedure as instructed). A student fills the volumetric flask containing solution B so that the bottom of the meniscus is above the mark on the flask (but does the rest of the procedure as instructed). Tto qh c. yellow 3, is used in some candy coatings. A 1.50 × 10-5 M A yellow dye, FD&C; solution of this dye has an absorbance of 0.209 at its max. 2. Calculate the molar absorptivity, E, of the dye at this wavelength, assuming a sample cell with a 1.0 cm pathlength. a. b. The yellow dye from one piece of candy is completely extracted into 10.0 mL. of water and diluted to 50.0 ml with water. The absorbance of the diluted solution is 0.496 at its "". Calculate the molarity of the dye in the diluted solution. Calculate the number of grams of this dye in the coating of one piece of candy (MM of dye 271 g/mol). c.

Explanation / Answer

Ans1- (a)

There will be an too low effect in the concentration.

(B) there will be no effect in the concentration of the solution due to the de minralised water..

(C)there will be too high changes in the concentration due to more ammount to filled.

There is more time requirements for solving second question..

Hope u understand the first one

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