Question Detail

CHM 102 Qualitative and Quantitative Analysis in Organic Chemistry Objective Question
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Question

In UV-Vis spectroscopy, what happens to λmax as conjugation increases?
Options
A λmax decreases (shifts to shorter wavelength)
B λmax increases (shifts to longer wavelength)
Correct Answer
C No change
D Becomes negative
Correct Answer

Option B is the correct answer.

Detailed Explanation

Increased conjugation lowers the HOMO-LUMO gap, causing absorption at longer wavelengths (higher λmax, bathochromic shift).

Hint

More conjugation = red shift.

Question Info

Course: CHM 102
Topic: Qualitative and Quantitative Analysis in Organic Chemistry
Type: Objective
Difficulty: Not specified
Question 844 of 1999
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