Q. based on the graph, the absorbance of caffeine using UV-vis spectroscopy is at ________. CHOICES:A.320 nmB.260 nmC.260-290 nmD.275 nm E.260-300 nm Using UV-Vis, the result of the absorption of coffee is shown in the graph. Pls. refer to the graph in answering the items below.1.0-0.80.60.40.2-0.0240260280300320340360Wavelength/nmAbsorbance/a.u

Caffeine's UV absorption spectrum shows two absorption bands peaking at 205 nm and 273 nm, with a…

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Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter7: Components Of Optical Instruments

Section: Chapter Questions

Problem 7.10QAP

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Question

Q. based on the graph, the absorbance of caffeine using UV-vis spectroscopy is at ________.

CHOICES:

A.	320 nm
B.	260 nm
C.	260-290 nm
D.	275 nm
E.	260-300 nm

Using UV-Vis, the result of the absorption of coffee is shown in the graph. Pls. refer to the graph in answering the items below.
1.0-
0.8
0.6
0.4
0.2-
0.0
240
260
280
300
320
340
360
Wavelength/nm
Absorbance/a.u

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