Lecture 1 - Spectroscopy Intro
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Last updated 10:30 PM on 11/13/22
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16 Terms
1
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What is spectroscopy?
The interaction of light with matter
2
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What is a spectroscopic transition?
A system moving from one energy level to another, either by gaining or losing a photon of light
3
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What is the wavelength range for visible light?
400nm-700nm
4
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What is the approximate wavelength for blue light?
400nm
5
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What is the approximate wavelength for red light?
700nm
6
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How do you convert nm to m?
1nm = 10^-9nm
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What is frequency?
The number of times a wave passes a fixed point
8
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What are the units for frequency?
s^-1 or Hz
9
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What is the speed of light?
c = 2.998 x 10^8 ms^-1
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What is the relationship between wavelength, frequency and the speed of light?
c = vλ
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What is the relationship between energy, Planck's constant and frequency?
E = hv
12
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What are the units of E in E = hv?
J
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How do you calculate 1 mol of photons?
1 mol photons (Jmol^-1) Avogadro's number x E
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What is the Avogadro number?
6.022 × 10^23
15
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What is the relationship between frequency and wavenumber?
Wavenumber is directly proportional to frequency
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What is the equation for the relationship between wavenumber and wavelength?
wavenumber (v bar) = 1/λ
