Question

Question 8 Status: Tries remaining: 21 Points possible: 1.00 Suppose you measure the absorbance of a yellow dye solution in a 1.00 cm cuvette. cm what is The absorbance of the solution at 427 nm is 0.46. If the molar absorptivity of yellow dye at 427 nm is 27400 M the concentration of the solution? Answer:

Answer 1

According to the beer-Lambert Law! Aal , A2C Adlc (A= Ecel A = Absorbance Cunit Less) c= concentraction (modran) d = Length (an) at cuvettie. &- molur absorptivity (Mau?) Q. 8 A=0.46 , &- 27000 milaut, dalam C = A EC = 0.46 27400 X 1 = 11678105 Concm = 1.67x105 & 010000167 mal aut Q. A= ecl then A=&c it de 1 an . Hope type at curve y=mn C m=&= Slope path so. Slope is molur absorptivity. it the Length is 1 an

and you other svale = 917 ppm. are cesien in structdwel Q.10 A-Ecl l-fon A= E- &C A Absorbance 0.35 0.3 +0.25 +02 to the graph when Absorbance is 0.21 them concertation is 1.5 x 10-5 SX166 1.5x105 Conch CM) 9- ALT 0.27 -0.14X105 - X0 =14000 c TiSXlo-s So molar absorptivity at unknowdye is = 14000Myang IM NM