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QC > PRELIM PART 2 > Flashcards

PRELIM PART 2 Flashcards

1
Q

means specific amount produced in a unit time or according to a single manufacturing order during same cycle of manufacture

A

BATCH

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2
Q

a batch; or portion of a batch

A

LOT

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3
Q

d, is calculated by finding the differences between individual results and the mean, regardless the sign, adding these differences, and dividing by the number of determinations.

A

AVERAGE DEVIATION

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4
Q

is found by dividing the average deviation by the mean and multiplied by 100 as % or 1000ppt.

A

RAD

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5
Q

• sd or s, preferred measure of precision
• it shows how much variation or
“dispersion” there is from the average (mean or expected value)
• low sd indicated that the data points tend to be very close to the mean and vice versa

A

STANDARD DEVIATION

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6
Q

makes use of control charts, a tool which may influence decision related to the functions of specifications, production or inspection.

A

STATISTICAL QUALITY CONTROL

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7
Q

use actual records of numerical measurement on a full continuous scale such as meter, grams, liter
Ex: mean and R charts

A

VARIABLE CHART

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8
Q

makes use of discrete data classifying the number of items conforming and falling
Ex: P chart (control chart for fraction defective)

A

ATTRIBUTE CHART

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9
Q

normally 3 standard deviation above the center line
Mean + 3 (SD)

A

UCL

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10
Q

3 standard deviation below the center line
• = Mean - 3 (SD)

A

LCL

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11
Q

analytical methods in which the volume of a solution of known concentration consumed during an analysis is taken as a measure of the amount of active
constituent in sample analyzed

A

TITRIMETRIC METHOD OF ANALYSIS

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12
Q

the active constituent in the sample

A

ANALYTE/TITRAND

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13
Q

solution of known concentration
• solution added by means of buret

A

TITRANT

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14
Q

chemical which changes color at or near the point in the titration where equivalent quantities of analyte and titrant have reacted

A

INDICATOR

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15
Q

• theoretical point at which equivalent amounts of each (analyte & titrant) have reacted

A

EQUIVALENCE POINT

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16
Q

a sudden change in color apparent by the use of indicators

A

END POINT

17
Q

f = # of replaceable OH-
Ex:
NaOH
Mg(OH)2

A

BASES

18
Q

f = total positive or negative
charges
Ex:
NaCl
MgO

A

SALTS

19
Q

determination of the exact concentration of the solution
• use of another standard solution known as secondary standard or by the use of carefully weighed sample of a substance of known purity which is termed as primary standard

A

STANDARDIZATION

20
Q

solution of known concentration (liquid)

A

SECONDARY STANDARD

21
Q

number of equivalent of solute per liter of solution
• equivalent/liter (eq/L) or milliequivalent/milliliter (mEq/mL)

A

NORMALITY

22
Q

number of moles of solute per liter of solution
• moles/liter

A

MOLARITY

23
Q

determination of N or M of solution
•accomplished by the use of another standard solution known as SECONDARY STANDARD or by the use of known purity substance as PRIMARY STANDARD

A

STANDARDIZATION

24
Q

the weight of substance chemically equivalent to 1 mL of standard solution
•express in mg/mL
N x mEq. wt.

A

TITER

25
Q

Burets, Pipets

A

TO DELIVER

26
Q

Volumetric Flask, Graduated Cylinder

A

TO CONTAIN

27
Q

•graduated glass tubes of uniform bore throughout the whole length
•closed at the bottom by glass or stopcock
•read at lower meniscus (for clear solutions)

A

BURETS

28
Q

for bases; a length of tubing connects a separate tip; economical

A

MOHR

29
Q

built in stopcock; expensive but more accurate

A

GEISSLER

30
Q

one titrant used, one volumetric solution

A

DIRECT

31
Q

two titrants, two volumetric solutions

A

RESIDUAL TITRATION

32
Q

process of repeating the procedure but omitting the sample

A

BLANK DETERMINATION

33
Q

a chemical process in which an acid reacts with a base
•Ex: HCl + NaOH –> NaCl + H2O
•Products: Water and Salt

A

NEUTRALIZATION

34
Q

are complex organic compounds used to:
- determine the end point
- determine the pH
- indicate that a desired change in pH has been effected

A

INDICATORS

35
Q

the direct or residual titrimetric analysis of bases using an accurately measured volume of acid

A

ACIDIMETRY

36
Q

conducted by introducing a standard acid solution gradually from a buret into a solution of the base being assayed until chemically equivalent amounts of each have reacted as shown by some change in properties of the mixture

A

DIRECT TITRATION

37
Q

also known as back titration
•frequently used when a reaction proceeds slowly or when the substance to be assayed does not give a distinct, sharp end point with an indicator by direct titration.

for compounds which react slowly with titrant
•poor solubility
•volatile substances

A

RESIDUAL TITRATION

38
Q

direct or residual titrimetric analysis of acids using a base

A

ALAKALIMETRY

QC (4 decks)

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