Calculate the energy associated with radiations having wavelength 280mµ. Calculate the answer in kcals mole-1.
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Answer:
11th
Chemistry
Structure of Atom
Development Leading to Bohr's Model of Atom
Calculate the energy in kil...
CHEMISTRY
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Asked on November 22, 2019 by
Dhaval Mehta
Calculate the energy in kilocalorie per mol of the photons of an electromagnetic radiation of wavelength 7600
A
˚
.
HARD
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ANSWER
λ=7600
A
˚
=7600×10
−8
cm
c=3×10
10
cms
−1
Frequency, v=
λ
c
=
7600×10
−8
3×10
10
=3.947×10
14
s
−1
Energy of one photon =hv=6.62×10
−27
×3.947×10
14
=2.61×10
−12
erg
Energy of one mole of photons =2.61×10
−12
×6.02×10
23
=15.71×10
11
erg
Energy of one mole of photons in kilocalorie =
4.185×10
10
15.71×10
11
[1kcal=4.185×10
10
erg]
=37.538 kcal per mol.What would you like to ask?
11th
Chemistry
Structure of Atom
Development Leading to Bohr's Model of Atom
Calculate the energy in kil...
CHEMISTRY
avatar
Asked on November 22, 2019 by
Dhaval Mehta
Calculate the energy in kilocalorie per mol of the photons of an electromagnetic radiation of wavelength 7600
A
˚
.
HARD
Share
Study later
ANSWER
λ=7600
A
˚
=7600×10
−8
cm
c=3×10
10
cms
−1
Frequency, v=
λ
c
=
7600×10
−8
3×10
10
=3.947×10
14
s
−1
Energy of one photon =hv=6.62×10
−27
×3.947×10
14
=2.61×10
−12
erg
Energy of one mole of photons =2.61×10
−12
×6.02×10
23
=15.71×10
11
erg
Energy of one mole of photons in kilocalorie =
4.185×10
10
15.71×10
11
[1kcal=4.185×10
10
erg]
=37.538 kcal per mol.