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Calculate the energy associated with a radiation having wavelength 3000 A. Give the answer in kcal mol-¹ and also in kJ mol-¹.

Calculate the energy associated with a radiation having wavelength 3000 A. Give the answer in kcal mol-¹ and also in kJ mol-¹.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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**Problem Statement:** Calculate the energy associated with a radiation having a wavelength of 3000 Å. Give the answer in kcal mol⁻¹ and also in kJ mol⁻¹. **Explanation:** - **Wavelength (λ):** 3000 Å (angstroms). - **Energy Calculation:** Use the formula \( E = \frac{hc}{λ} \) where \( h \) is Planck's constant and \( c \) is the speed of light. - **Unit Conversion:** Convert the energy from ergs to joules and then to kcal mol⁻¹ and kJ mol⁻¹. **Note:** There are no graphs or diagrams associated with this question.
Transcribed Image Text:**Problem Statement:** Calculate the energy associated with a radiation having a wavelength of 3000 Å. Give the answer in kcal mol⁻¹ and also in kJ mol⁻¹. **Explanation:** - **Wavelength (λ):** 3000 Å (angstroms). - **Energy Calculation:** Use the formula \( E = \frac{hc}{λ} \) where \( h \) is Planck's constant and \( c \) is the speed of light. - **Unit Conversion:** Convert the energy from ergs to joules and then to kcal mol⁻¹ and kJ mol⁻¹. **Note:** There are no graphs or diagrams associated with this question.
Expert Solution
Step 1

given, wavelength,λ= 3000 A0 =3000×10-8 cm

        speed of light, c =  3×1010cm/s

1 kcal = 4.185 x 1010 ergs

1 Kcal = 4.18 kj

 

 

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