(a) Interpretation: Line width of lithium line at 6707.76 A ∘ is to be determined when the temperature of absorbing atom is 2000 K. Concept introduction: Doppler Effect concept will be used to calculate the width of lithium line. For this following formula will be used: Δ λ λ = v c Here, Δλ = wavelength difference λ= wavelength v = speed of absorbing atom c = speed of light And average speed of atom- v = 8 k T / π m Here, T = temperature of absorbing atom k = Boltzmann constant, 1.38 × 10 − 23 kg .m 2 .s -2 .K -1 m = mass of atom

BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213
BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

Solutions

Chapter 8, Problem 8.8QAP
Interpretation Introduction

(a)

Interpretation:

Line width of lithium line at 6707.76A is to be determined when the temperature of absorbing atom is 2000 K.

Concept introduction:

Doppler Effect concept will be used to calculate the width of lithium line. For this following formula will be used:

Δλλ=vc

Here,

Δλ = wavelength difference

λ= wavelength

v = speed of absorbing atom

c = speed of light

And average speed of atom-

v=8kT/πm

Here,

T = temperature of absorbing atom

k = Boltzmann constant, 1.38×1023kg.m2.s-2.K-1 

m = mass of atom

Interpretation Introduction

(b)

Interpretation:

Line width of lithium line at 6707.76A is to be determined when the temperature of absorbing atom is 3120 K.

Concept introduction:

Doppler Effect concept will be used to calculate the width of lithium line. For this following formula will be used:

Δλλ=vc

Here,

Δλ = wavelength difference

λ= wavelength

v = speed of absorbing atom

c = speed of light

And average speed of atom-

v=8kT/πm

Here,

T = temperature of absorbing atom

k = Boltzmann constant, 1.38×1023kg.m2.s-2.K-1 

m = mass of atom

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