Question

Solution	Concentration	λmax	Absorbance	Color Region
Blue # 2	Dilute	612.0 nm	0.314	Orange
Blue # 2	Concentrated	6.10.0 nm	0.667	Orange

Red # 4

Solution	Concentration	λmax	Absorbance	Color Region
A	1.00 x 10-5	0.506	0.208	Green
B	2.00 x 10-5	0.506	0.442	Green
C	3.00 x 10-5	0.506	0.607	Green
D	4.00 x 10-5	0.506	0.874	Green

Q3: Calculate the following for light with the same wavelength as the λmax found for an aqueous solution of concentered FD&C blue #2

(a) Color of light absorbed

(b) Frequency

(c) Energy of one photon

Q4: Calculate the following for light with the same wavelength as the λmax found for an aqueous solution of concentered FD&C red #4

a) Color of light absorbed

b) Frequency

c) Energy of one photon

Q5: Base on the answers to the two previous questions. What happens to the following as you go from blue to red in the visible spectrum?

(a) Wavelength

(b) Frequency

(c) Energy of a photon

*****Express answers with an appropriate number of signification figures and proper units and using scientific notation when necessary/ appropriate.

Answer 1

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