Kindly answer question a & b The following data were obtained for a set of standards using UV-VISspectrophotometric analysis for the determination of caffeine in tea sample.Caffeine (ppm)Absorbance10.000.07920.000.15930.000.26340.000.34450.000.443(a) Briefly describe the meaning of chromophores.(b) (i)Depict the graph using Microsoft excel(ii)Identify the caffeine concentrations in two unknown samples, X and Y,having absorbance values of 0.123 and 0.376.

(a) Chromophore is a group which exhibit absorption of electromagnetic radiation in UV or Visible…

a) Briefly describe the meaning of chromophores. b) (i) Depict the graph using Microsoft excel (ii) Identify the caffeine concentrations in two unknown samples, X and Y, having absorbance values of 0.123 and 0.376.

a) Briefly describe the meaning of chromophores. b) (i) Depict the graph using Microsoft excel (ii) Identify the caffeine concentrations in two unknown samples, X and Y, having absorbance values of 0.123 and 0.376.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Kindly answer question a & b

The following data were obtained for a set of standards using UV-VIS
spectrophotometric analysis for the determination of caffeine in tea sample.
Caffeine (ppm)
Absorbance
10.00
0.079
20.00
0.159
30.00
0.263
40.00
0.344
50.00
0.443
(a) Briefly describe the meaning of chromophores.
(b) (i)
Depict the graph using Microsoft excel
(ii)
Identify the caffeine concentrations in two unknown samples, X and Y,
having absorbance values of 0.123 and 0.376.

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