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ANACHEM > Analytical Chemistry: Introduction > Flashcards

Analytical Chemistry: Introduction Flashcards

1
Q

Branch of science that deals with the separation, identification and determination of the components in a sample

A

Analytical Chemistry

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2
Q

particularly concerned with the questions of “what chemicals are present, what are their characteristics and in what quantities are they present?”

A

Analytical Chemistry

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3
Q

is a method of analytical chemistry which seeks to find elemental composition of inorganic compounds and the functional group of organic compounds.

A

Qualitative Analysis

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4
Q

in analytical chemistry, the measurements of quantities of substances produced in reactions rather than simply noting the nature of the reactions

A

Quantitative Analysis

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5
Q

means to discover through experimentation or examination

A

Ascertainment of impurities

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6
Q

Classification of Analysis

A

I. Based on sample size
II. Based on the extent of determination
III. Based on nature of methods
IV. Based on materials used

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7
Q

< 1 mg

A

Ultramicroanalysis

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8
Q

1 mg – 10 mg

A

Microanalysis

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9
Q

10 mg – 100 mg

A

Semi-microanalysis

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10
Q

100 mg – 1 g

A

Macroanalysis

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11
Q

total amount of a class or a group of active plant principles in a given sample

A

Proximate analysis

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12
Q

Amount of a specific constituent or a single chemical species present in the sample

A

Ultimate analysis

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13
Q

also known as general/ chemical/ wet/ stoichiometric method

A

Classical method

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14
Q

-more accurate
-based on specific physical or chemical properties of the analyte

A

Instrumental method

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15
Q

Involves the crude drugs and other natural products

A

Miscellaneous or special method

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16
Q

titrimetric method

A

Chemical

17
Q

instruments and special apparata

A

Physical

18
Q

use of microorganism and animals and parts thereof

A

Biological

19
Q

Types of Quantitative Analysis

A

A. Volumetric Analysis
B. Gravimetric Analysis
C. Special Methods
D. Physico-Chemical Methods

20
Q

analysis involving the measurement of volume of a solution of know concentration required to react with the desired constituent.

A

Volumetric Analysis

21
Q

Divisions of volumetric analysis

A

I. Neutralization
II. Precipitation
III. Compleximetry
IV. Oxidation

22
Q

reduction permanganate ceric sulfate iodometry iodimetry bromine potassium iodate diazotization assay with nitrite

A

Oxidation

23
Q

Analysis involving the accurate measurement of weight of substance being determined which may be isolated in pure form or converted to another substance of known composition by making it react quantitatively with another substance usually a precipitant.

A

Gravimetric Analysis

24
Q

analysis which require a distinct type of technique such as analysis of crude drugs, assay of fats and fixed oils, assay of volatile oils and assay of alkaloids.

A

Special Methods

25
Q

Analysis based on some specific physical or chemical property or properties of the substance being analyzed with the use of instruments such as: spectrophotometer, chromatograph units, polarographer, polarimeter, flourometer.

A

Physico-Chemical Methods

26
Q

determination of alcohol, protein components, volatile component, alkaloids

A

Distillation

27
Q

physical characterization

A

Microscopy

28
Q

rotatory power

A

Polarimeter

29
Q

purity of substance

A

Refractometer

30
Q

moisture content

A

Dessicator

31
Q

moisture content

A

-Oven
-Moisture Balance

32
Q

identity and quantity of component

A

-Chromatography

33
Q

identity and purity

A

Spectroscopy

34
Q

quality and quantity of components

A

Polarography

35
Q

determination of amounts required to produce the desired, definite effect

A

Biological tests

36
Q

According to their properties, cations are usually classified into five groups.

A

Detecting Cations

37
Q

-Halides are precipitated by silver nitrate; they can be further identified by color.
-Sulfates can be precipitated by barium chloride.
-Nitrates can be reduced to ammonia

A

Detecting Anions

38
Q

is now used only as a pedagogical tool.

A

Qualitative inorganic analysis

39
Q

are able to quickly detect the presence and concentrations of elements using a very small amount of sample.

A

Modern techniques such as atomic absorption spectroscopy and ICP-MS

ANACHEM (10 decks)

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