Solutions of P and Q individually obey Beer’s law over a large concentration range. Spectral data for these species in 1.00-cm cells are

(a) Plot an absorption spectrum for a solution that is 6.45 x 10^-5 M in P and 3.21 x 10^-4 M in Q.
(b) Calculate the absorbance (1.00-cm cells) at 440 nm of a solution that is 3.86 x 10^-5 M in P and 5.37 x 10^-4 M in Q.
(c) Calculate the absorbance (1.00-cm cells) at 620 nm of a solution that is 1.89 x 10^-4 M in P and 6.84 x 10^-4 M in Q.

Transcribed Image Text:

Absorbance A, nm 8.55 x 10-5 MP 2.37 x 10-4 MQ 400 0.078 0.500 420 0.087 0.592 440 0.096 0.599 460 0.102 0.590 480 0.106 0.564 0.515 0.433 0.343 500 0.110 520 0.113 540 0.116 580 0.170 0.170 600 0.264 0.100 620 0.326 0.055 640 0.359 0.030 660 0.373 0.030 680 0.370 0.035 700 0.346 0.063