Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

PSMB > SPECTROPHOTOMETRY > Flashcards

SPECTROPHOTOMETRY Flashcards

(60 cards)

Start Studying
1
Q

Defined as method of analysis which deals with the measurement of spectra

A

SPECTROMETRY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Range of colors, energy, and activity of a drug

A

SPECTRA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A branch of spectrometry which embraces the measurement of
the absorption by chemical species of radiant energy of definite
and narrow wavelength approximating monochromatic radiation

A

SPECTROPHOTOMETRY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Complete cycle which pass a given point per second

A

FREQUENCY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Number of waves per cm

A

WAVELENGTH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Fxnal grp which absorbs radiant energy in uv/vis region (ethylene, methylene, aldehyde, and ketone)

A

CHROMOPHORE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The ratio of the radiant power transmitted by the soln to the radiant power transmitted by the blank

A

TRANSMITTANCE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Also called optical density, absorbancy, extinction coefficient

A

ABSORBANCE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Expressed in grams of solute per liter of soln

A

CONCENTRATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The value obtained by dividing the absorbance by the product of conc (in g/L)

A

ABSORPTIVITY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The value obtained by dividing the absorbance by the product of conc (in moles/L)

A

MOLAR ABSORPTIVITY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The complete system of energy propagated in wave form

A

ELECTROMAGNETIC SPECTRUM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Refers to the energy in UV, Vis, and IR regions of the EM spectrum

A

RADIANT ENERGY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The graph plotting absorbance versus wavelength

A

ABSORPTION SPECTRUM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

WAVELENGTH—
UV
VISIBLE
NEAR IR

A

UV=220-380nm
VISIBLE=380-780nm
NEAR IR=780-3000nm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

WAVELENGTH—
Medium
Grp Freq Region
Fingerprint Region
Far IR

A

Medium=3.0-15um
Grp Freq Region=3-8um
Fingerprint Region=8-15um
Far IR=15-300um

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Radiation of single wavelength

A

MONOCHROMATIC RADIATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Usual spectral region that approximates monochromatic radiation

A

0.5-10nm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

States that the power of a transmitted radiant decreases exponentially as the concentration of the solution containing the
absorbing chemical species increases arithmetically

A

BEER’S LAW

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

States that the power of a transmitted radiant beam decreases exponentially as the thickness (turbidity or cloudy) of the solution
containing the absorbing chemical species increases arithmetically

A

LAMBERT OR BOUGUER’S LAW

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

A combination of the above law and relates the power of the
incident and the transmitted radiant beam to the thickness and concentration of the solution containing absorbing chemical species

A

BEER-LAMBERT OR BEER-BOUGER’S LAW

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q
  • Associated with the overall motion of electrons around the nuclei
A

Electronic (UV)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q
  • Associated with the motion of atoms within the molecule
A

VIBRATIONAL (IR)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Associated with the overall rotation of the molecule

A

Rotational
(Microwave)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Not quantized - Associated with the motion
Transitional
26
Causes the excitation of the vibrations of covalent bonds within that molecules
IR Radiation
27
distance between two atoms increases or decreases
STRETCHING
28
Position of the atom changes relative to the original bond axis
BENDING (DEFORMATION)
29
Bending In-Plane =
Scissoring & Rocking
30
Bending Out-of-Plane =
Wagging & Twisting
31
standard method for determining the physicochemical properties of drug molecules prior to formulation
UV Spectroscopy
32
Rotation of spinning nucleus when magnetic field is applied (MRI)
NUCLEAR MAGENTIC RESONANCE
33
An instrumental method for identifying the chemical constitution of a substance by means of the separation of gaseous ions according to their differing mass and charge
MASS SPECTROMETRY
34
based on the measurement of intensity of the light emitted when a metal is intro into a flame
FLAME SPECTROSCOPY
35
Is an analytical technique involves the study of the absorption of radiation by neutral atoms in gaseous state
ATOMIC ABSORPTION SPECTROSCOPY
36
Measures excess energy by emission/fluorescence
FLUOROMETRY
37
Measurement of the brightness of transmitted light
TURBIDIMETRY
38
Measurement of the brightness of reflected light
NEPHELOMETRY
39
Absorption measurement that is made in visible spectrum
COLORIMETRY
40
Info about the analyte is derived from the measurement of current
VOLATAMMETRY
41
Method of analysis based on the measurement of current resulting from the electrolysis of an electroactive species at a given electrode potential under controlled conditions
POLAROGRAPHY
42
-Study and measurement of electrode potentials
POTENTIOMETRY
43
electrodes for pH determination
GLASS ELECTRODES
44
Develops a potential that varies according to the activity (conc) of hydrogen ions of the spec comp in the soln
INDICATING ELECTRODES
45
maintains a constant potential
REFERENCE ELECTRODES
46
Used to determine quantitatively the strength & purity of soln
REFRACTOMETRY
47
Ratio of the velocity of light in air to the velocity of light in medium
INDEX OF REFRACTION
48
max value of refraction
CRITICAL ANGLE
49
Establish sample's purity and identity
POLARIMETRY
50
Is a property of substance to rotate a plane of polarized light
POLARIMETRY
51
Used to obtain plane-polarize light
PRISMS
52
Polarized the light
POLARIZER
53
Examined the light
ANALYZER
54
Overall difference in the position of the analyzer provide minimum light intensity
ROTARY POWER
55
Monochromatic Light Source (Instrument)
Sodium Vapor Lamp
56
Polarizer (Instrument)
Calcite Prism
57
2 Prisms used
Iceland spar Nicol prism
58
small tube of circular or square cross section, sealed at one end, made of plastic, glass or fused quarts (UV lights) designed to hold a sample
CUVETTE
59
Null-balance manually operated instrument
BECKMAN DU-2 SPECTROPHOTOMETER
60
DIRECT-READING MANUALLY OPERATED SPECTROPHOTOMETER
BAUSCH AND LOMB SPECTRONIC 20

PSMB (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions