Chapter 13- Spectroscopy

Question 1

What is Nuclear Magnetic Resonance? (NMR)

Answer 1

Tells about the carbon skeleton and environments of hydrogens that are attached.

Question 2

What is Infrared Spectroscopy (IR)?

Answer 2

Reveals the presence of signals and the absence of key functional groups.

Question 3

What is ultraviolet light spectroscopy (UV-VIS)?

Answer 3

Probes electron distribution especially in conjugated pi electron systems.

Question 4

What is Mass Spectrometry?

Answer 4

Gives molecular weight and formula.

Question 5

What is the relationship between photon and it’s frequency?

Answer 5

A photon is directly proportional to its frequency.

Question 6

What is the relationship between frequency and wavelength?

Answer 6

Frequency is Inversely proportional to wavelength. The greater the frequency the shorter the wavelength.

Question 7

What is the relationship between energy and frequency?

Answer 7

Energy is directly proportional to frequency.

Question 8

What is the consonant for speed of light? (C)

Answer 8

3.0 x 10^8 m/

Question 9

What is Resonance?

Answer 9

Resonance is the transfer of energy between two objects.

Question 10

Electromagnetic Radiation

Answer 10

Has properties of particles and waves. Particles are called photons.
* Travels at the speed of light.

Question 11

A Photon

Answer 11

Possess an amount of energy referred to as a quantum.

Question 12

Equation for the energy of a Photon

Answer 12

E=hv

Question 13

Planck’s Constant (h)

Answer 13

6.63 X 10^-34 J*s

Question 14

What is the equation to find the speed of light (c), frequency (v), and wavelength (λ)?

Answer 14

C=vλ

Question 15

1H NMR Spectroscopy

Answer 15

Depends on absorption of energy when nucleus of atom is excited from its lowest energy spin states to the next state.
* Tell about the environments of hydrogens in a molecule