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PHARMACOLOGY > QC 2 L1.2 > Flashcards

QC 2 L1.2 Flashcards

1
Q

measurement of light

A

PHOTOMETRY

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2
Q

most commonly used measurement in the laboratory because
light can undergo

A

PHOTOMETRY

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3
Q

Spectrophotometry

A

Absorption

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4
Q

Nephelometry

A

Scatter

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5
Q

Turbidimetry

A

Reflection

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6
Q

Flame Spectroscopy

A

Emission

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7
Q

Fluorometry

A

Fluorescence

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8
Q

it is a function of its wavelength

A

color of light

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9
Q

is a form of electromagnetic energy that appears to
travel in waves

A

Light

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10
Q

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

A

BEER’S LAW

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11
Q

What is the relationship between Transmittance = Concentration

A

inversely proportional

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12
Q

What is the relationship between Transmittance = Thickness

A

inversely proportional

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13
Q

What is the relationship between Absorbance = Thickness

A

Directly Proportional

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14
Q

What is the relationship between Absorbance = concentration

A

Directly Proportional

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15
Q

What is the relationship between number of solute = concentration

A

Directly Proportional

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16
Q

used to represent the logarithm of transmittance

A

ABSORBANCE

17
Q

increases linearly with concentration

A

ABSORBANCE

18
Q

also known as “optical activity”, “absorbancy” or
“extinction coefficient”

A

ABSORBANCE

19
Q

relationship of absorbance to concentration

A

Beer’s Equation

20
Q

What is the formula for Beer’s Equation

A

A = a b C
where,
o A = absorbance
o a = absorptivity coefficient (constant)
o b = length of light path (constant)
o C = concentration

21
Q

the absorbance of an
unknown concentration (u) of a particular constituent is
compared with the absorbance of a known concentration (s)

A

spectrophotometric analysis

22
Q

states that the power of a transmitted radiant beam decreases exponentially as the thickness of the solution containing the absorbing chemical species increases
arithmetically

A

LAMBERT’S OR BOUGUER’S LAW

23
Q

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

A

BEER-LAMBERT’S / BEER-BOUGUER’S LAW

24
Q

True or false
↓ conc. solute = ↓ light abs = ↓ transmitted light

A

False
↓ conc. solute = ↓ light abs = ↑ transmitted light

25
Q

True or false
↑ conc. solute = ↑ light abs = ↓ transmitted light

A

True

26
Q

What is the relationship between wavelength = emitted energy

A

inversely proportional

PHARMACOLOGY (18 decks)

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