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chem lab > experiment 1 > Flashcards

experiment 1 Flashcards

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1
Q

a measure of hydrogen ion concentration

A

pH

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2
Q

used to measure and identify whether a substance is an acid, base or neutral

A

pH scale

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3
Q

pH scale of neutral

A

7

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4
Q

pH scale of acid

A

0-6.9

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5
Q

pH scale of base

A

7.1-14

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6
Q

determining the pH of pharmaceuticals is important in determining their _________ and _________

A

activity and stability

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7
Q

refers to the quantity of solute that dissolves in a given amounts of solvent

A

solubility

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8
Q

the solubility of a solute depends on the:

A

nature of solute and solvent
amount of solute
temperature of the solvent

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9
Q

the determination of moisture/water content of pharmaceuticals and other products is on of the _______ methods that a medicinal chemist is required to make

A

quality control

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10
Q

used in the preparation of many materials and could be present as a combined constituent

A

water

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11
Q

an analytical procedure for qualitatively assessing or quantitatively measuring the presence and amount of a target quantity of a substance

A

assay

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12
Q

one of the techniques employed in assay procedures is ____________

A

volumetric analysis

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13
Q

this procedure involves the addition of a specific volume of a solution of known concentration to a solution of unknown concentration

A

volumetric analysis

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14
Q

H+ donor OH- donor

A

arrhenius theory

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15
Q

electron acceptor and donor

A

lewis

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16
Q

proton donor and accpetor

A

bronted-lowry

17
Q

sour taste

A

acid

18
Q

bitter taste

A

base

19
Q

litmus: blue to red

A

acid

20
Q

litmus: red to blue

A

base

21
Q

Feel slippery

A

base

22
Q

Phenolphthalein: Pink to violet

A

base

23
Q

Phenolphthalein: colorless

A

acids

24
Q

Methyl orange: pink/red

A

acid

25
Q

NaOH, KOH, Ca(OH)2

A

base

26
Q

solubility decreases with increase in temp (Mg citrate)

A

exothermic

27
Q

solubility increases with increase in temp

A

endothermic

28
Q

as temperature ________, solubility of gas _________

A

increases, decreases

29
Q

the solubility of a gas increases as pressure increases

A

henry’s law

30
Q

presence of salt decreases solubility

A

salting out

31
Q

presence of salt increases solubility

A

salting in

32
Q

how much water is in a product. It influences the physical properties of a substance, including weight, density, viscosity, conductivity, and others. It is generally determined by weight loss upon drying.

A

moisture content

chem lab (5 decks)

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