
(a)
Interpretation:
The resolution is required for grating to resolve given wavelengths has to be calculated.
Concept introduction:
Resolution of grating:
It is useful for separate two closely merged peaks
(a)

Answer to Problem 20.11P
The resolution is
Explanation of Solution
Given,
Wavelengths is
According to resolution of grating:
The resolution is =
=
=
(b)
Interpretation:
The given resolution is close in nm is the closest line has to be resolved.
Concept introduction:
Resolution:
It is useful for separate two closely merged peaks
(b)

Answer to Problem 20.11P
The resolution is
Explanation of Solution
Given,
Given,
Wavelengths is
According to resolution of grating:
Resolution
The resolution is =
=
=
(c)
Interpretation:
The fourth-order resolution of a grating has to be calculated.
Concept introduction:
Resolution of grating:
It is useful for separate two closely merged peaks
(c)

Answer to Problem 20.11P
The fourth-order resolution of a grating is
Explanation of Solution
Given,
The fourth-order resolution of a grating is
According to resolution,
(d)
Interpretation:
The angle dispersion
Concept introduction:
Dispersion of grating:
It is useful to separate wavelengths differing with
(d)

Answer to Problem 20.11P
The angle dispersion
Explanation of Solution
Given,
Wavelengths is
According to resolution of grating
The angular dispersion
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Chapter 20 Solutions
Quantitative Chemical Analysis
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