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ANACHEM > ANACHEN QUIZ (MODULE 9) > Flashcards

ANACHEN QUIZ (MODULE 9) Flashcards

1
Q

the over all procedure for the determination of stoichiometry or equivalence point.

A

titration

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2
Q

common laboratory method to determine the concentration of an identified analyte

A

titration

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3
Q

the solution added or reagent generated in a titration

A

titrant

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4
Q

the solution to which titrant is added

A

titrand

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5
Q

the point at which the indicator changes colour in the coloumetric titration

A

end point

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6
Q

is the point of titration when the amount of added standard reagent is equivalent to the amount of analyte

A

equivalent point

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7
Q

a reagent or device used to indicate when the end point has been reached

A

indicator

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8
Q

is a reagent of known concentration

A

standard solution

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9
Q

are used in titrations and in many other chemical analyses

A

standard solution

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10
Q

used to consume an analyte is determined by titration with a second standard solution

A

back titration

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11
Q

are often required when rate of reaction between the analyte and reagent is slow or when the standard solution lacks stability

A

back titration

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12
Q

is an ultrapure compound that serves as the reference material for a titration or for another type of quantitative analysis

A

primary standard

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13
Q

is a compound whose purity has been determined by chemical analysis

A

secondary standard

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14
Q

it serves as the working standard material for titrations and for many other analyses

A

secondary standard

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14
Q

titration procedure is carried out without analyte water sample

A

blank titration

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15
Q

it is used to correct titration error

A

blank titration

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16
Q

are based on determining the quantity of a reagent of known concentration that is required to react completely with the analyte

A

titration method

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17
Q

3 TYPES OF TITRATION

A

volumetric titrations, gravimetric titrations, coulometric titrations

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18
Q

measuring the volume of a solution of known concentration

A

volumetric titrations

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18
Q

the mass of the reagent of a known concentration

A

gravimetric titrations

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19
Q

measuring total charge to complete the redox reaction

A

coulometric titrations

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19
Q

titration method is also called as

A

titrimetric methods

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20
Q

it involves the controlled reaction of a standard reagent known amount with a solution of the analyte

A

titrimetric method

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21
Q

fast solution reactions between analyte and reagent

A

principles

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22
Q

titration to stoichiometric point by volumetric or coulometric methods

A

principles

23
Q

end point detection by visual indicators, precipitation indicators or electrochemical means

A

principles

24
Q

burettes, pipettes, , volumetric flask, analytical quality chemical balance, indicator electrodes and coulometric electrodes

A

apparatus

25
Q

very widespread for precise routine and non routine analysis in industrial and research electrodes

A

applications

26
Q

storage of a large volumes of solutions, instability of some reagent solutions, need for scrupulously

A

disadvantages

27
Q

steps of titration

A

typical set up for carrying out a titration, detail of the burette graduations, before the titration begin, during titration, titration end point

27
Q

the apparatus consist of a

A

burette, burette stand and clamp with white porcelain base, and wide mouth Erlenmeyer flask

28
Q

burette, burette stand and clamp with white porcelain base to provide an appropriate background for viewing indicator changes, and wide mouth Erlenmeyer flask

A

typical set up for carrying out a titration

29
Q

burette is filled with titrant solution to within

A

1 or 2 mL of the zero position at the top

30
Q

the solution to be titrated is placed in the flask, and the indicator is added

A

before the titration begins

31
Q

initial volume of the burette is

A

nearest 0.01mL

32
Q

the titrant is added to the flask with swirling until the color of the indicator persists

A

during titration

33
Q

end point is achieved

A

titration end point

34
Q

end point pH may be calculated using what equations

A

(3.27) 3.29) (3.30)

35
Q

may be used also in analytical methods where the analyte reacts to produce a stoichiometric amount of an acid or base which can then be titrated

A

acid base titrations

36
Q

most well known example for nitrogen determination in organic compound

A

Kjeldahl method

37
Q

type of volumetric analysis wherein the colored complex is sed to determine the endpoint of titration

A

complexometric titrations

38
Q

other term for redox titration

A

oxidation-reduction titration

39
Q

is a laboratory method of determining the concentration of a given analyte by causing redox reaction between titrant and analyte

A

redox titration

40
Q

used to analyze a wide range of inorganic analytes

A

redox titration

41
Q

type of titration which involves the formation of precipitate during the titration techniques

A

precipitation titrations

42
Q

precipitation titration used to determine what?

A

halide ions

43
Q

titrant reacts with the analyte and forms an insoluble substance called

A

precipitate

44
Q

most widely used reagent giving rise to silver which are characteristically sparingly soluble

A

silver nitrate

45
Q

3 types of volumetric methods

A

simple, back, blank

46
Q

4 types of simple

A

acid base, redox, precipitation, complexometric

47
Q

reactions between the analyte and stained reagent

A

titrant

48
Q

is widely used analytical chemistry to determine acid, bases, oxidants, reductants, metal ions, proteins, and other species

A

titration

49
Q

the reaction is known and reproducible stoichiometry

A

titrations

50
Q

known concentration

A

titrant

51
Q

unknown concentration

A

titrand

52
Q

first process

A

equivalent point

53
Q

second process

A

end point

54
Q

highly stable

A

primary standart

55
Q

less pure less stability

A

secondary standard

56
Q

less pure less stability

A

secondary standard

ANACHEM (6 decks)

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