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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Butter yellow absorbs light with a wavelength of 408 nm, whereas the nitrated form absorbs at 478 nm. Which absorbs the higher energy light?

Interpretation Introduction

Interpretation:

Wavelengths of butter yellow and its nitrated form are given using these wavelength value it should be determined that which (butter yellow and its nitrated form) absorbs the higher energy light.

Concept Introduction:

Absorption spectrum:  This is measurement of the amount of (UV-VIS) light absorbed by a liquid sample of a given path length. Absorbance is directly proportional to the concentration of matter in the sample.

The energy E of electromagnetic radiation is directly proportional to the frequency ν of the radiation.

Therefore,

  E=hνE=hcλ

Where, E is the energy, h is the Plank’s constant (6.626×1034Js), ν is the frequency of radiation, c is the velocity of light and λ is the wavelength of the radiation.

Explanation

The given wavelengths of butter yellow and nitro butter yellow are 408nm and 478nm respectively.

The energy E of electromagnetic radiation is directly proportional to the frequency ν of the radiation

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