Spectroscopic Methods

Question 1

Used for identification myriad inorganic and organic species

Answer 1

UV-Vis

Question 2

What is the application of UV-Vis

Answer 2

Organic Compounds, chromophoes, inorganic compound, charge transfer complexes

Question 3

What are unshared outer electrons that are largely localized?

Answer 3

O, X, S and N

Question 4

Radiation source, monochromator, shutter, reference cell, detector, amplifier, readout

Question 5

Measurement of wavelength and intensity of the absorption of mid-infrared light by a sample

Answer 5

IR spectroscopy

Question 6

Molecule must undergo a change in dipole moment

Answer 6

True

To absorb infrared radiation

Question 7

IR source, beam splitter, chopper (wavelength selctor), monochromator, IR detector

Answer 7

Double Beam IR Spectroscopy Setup

Question 8

IR Source

Nernst Glower

Answer 8

Rare earth oxides, fragile, must preheated to be conductive

Question 9

IR Source

Rod of silicon carbide, at short wavelengths

Answer 9

Globar Source

Question 10

IR Source

Carbon dioxide laser

Answer 10

Used for monitoring certain atmospheric pollutants

Question 11

Thermal Detectors

Answer 11

Thermocouple and Bolometer

Question 12

Most expensive

Answer 12

Photoconducting detectors

Question 13

Insulator with special thermal and electric properties

Answer 13

Pyroelectric detectors

Question 14

Neat means

Answer 14

Solvent

Answer 15

Nujol mull

Answer 16

KBr press

Question 17

What is the function of IR Spectroscopy?

Answer 17

To elucidate functional groups or structure based on the distinct reigion in IR spectra

Question 18

Measurement of the wavelenngth and intensity of the absorption of near-infrared light

Answer 18

NIR Spectroscopy

Question 19

Light source

Answer 19

W lamp

Question 20

Detector

Answer 20

Pb-S solid state

Question 21

Sample

Answer 21

Glass or quartz

Question 22

Can detect atoms with nuclear spin of 1/2

Answer 22

Nuclear Magnetic Resonance (NMR) Spectroscopy

Behaves like a magnet

Question 23

A computational method for analyzing the frequencies present in an oscillating signal

Answer 23

Fourier Transform

Question 24

Radio frequecy is transformed into _____?

Answer 24

NMR Spectrum

Through FR

Question 25

Excitation of the inner electrons of atoms promotes some to higher energies.

Answer 25

Xray Emission Spectroscopy

Question 26

Subjected elements by Xray Emission Spectroscopy

Answer 26

Elements heavier than Flourine

Question 27

# XFR Instrumentation Device producing a parallel beam of rays

Answer 27

Collimators

Question 28

Either measures yha angle or allows roation to a precise angular position

Answer 28

Goniometer Scale

Question 29

# Mass Spectrometer The higher the signal,

Answer 29

The higher the abundance

Question 30

# True or False? No other elements are absorm in the same wavelength

Answer 30

True

Question 31

ICP

Answer 31

Inductive Coupled Plasma