
(a)
Interpretation:
The energy of the infrared
Concept introduction:
Wavelength is the distance between the two crests or troughs of the wave. It is denoted by the symbol

Answer to Problem 12.2P
The energy of infrared light with
Explanation of Solution
Wavelength and frequency are related to each other by the formula shown below.
Where,
• c is the
The value of the speed of light is
The wavelength of infrared light is given
Substitute the value of c and
The frequency of infrared light with
The energy of light is given by the formula shown below.
Where,
• E is the energy.
•
The value of Planck’s constant (
Substitute the value of
The energy calculated above is for the one photon.
The energy for the one mole of photons can be calculated by multiplying with avogadro’s number.
The energy in terms of
The energy of infrared light with
The energy of infrared light with
(b)
Interpretation:
The energy of the blue light with wavelength
Concept introduction:
Wavelength is the distance between the two crests or troughs of the wave. It is denoted by the symbol

Answer to Problem 12.2P
The energy of blue light with
Explanation of Solution
Wavelength and frequency are related to each other by the formula shown below.
Where,
• c is the speed of light.
The value of the speed of light is
The wavelength of blue light is given
The
To calculate, frequency substitute the value of c and
The conversion of
Substitute the above equation in equation (2) as shown below.
The frequency of blue light with
The energy of light is given by the formula shown below.
Where,
• E is the energy.
•
The value of Planck’s constant (
Substitute the value of
The energy calculated above is for the one photon.
The energy for the one mole of photons can be calculated by multiplying with avogadro’s number.
The energy in terms of
The energy of blue light with
The energy of blue light with
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Chapter 12 Solutions
Organic Chemistry
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