( 3 n 4 (b) Explain the following observations inUV-spectroscopy :(i) Acetone record Amax at 278 nm inhexane solution but at 264-5 nm inaqueous solution.(ü) Although ethylene has no Amaxabove 190 nm, norbornadiene (II)records four Amer values above200 nm.maxon(Ш)(ii) When . anp-aminophenolrecords Àmax at shorter wavelength.aqueous solutionf ofacidified,isitах4-Methylacetophenone records Amaxat 252 nm (ɛ15000), whereas Amaxfor 2,4,6-trimethyl acetophenone is242 nm (ɛ32000).(iv)

As you have mentioned that three and fourth are to be solved, so I have solved this third and fourth…

Answered: the following observations tros

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Chemistry

the following observations tros

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

( 3 n 4

(b) Explain the following observations in
UV-spectroscopy :
(i) Acetone record Amax at 278 nm in
hexane solution but at 264-5 nm in
aqueous solution.
(ü) Although ethylene has no Amax
above 190 nm, norbornadiene (II)
records four Amer values above
200 nm.
max
on
(Ш)
(ii) When . an
p-aminophenol
records Àmax at shorter wavelength.
aqueous solutionf of
acidified,
is
it
ах
4-Methylacetophenone records Amax
at 252 nm (ɛ15000), whereas Amax
for 2,4,6-trimethyl acetophenone is
242 nm (ɛ32000).
(iv)

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