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PORG LAB > LAB#2 > Flashcards

LAB#2 Flashcards

(57 cards)

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1
Q

What is the title of the experiment number 2

A

pH Determination

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2
Q

It has a pH of 0 to less than 7

It reacts with metals and bases and tends to taste sour

A

Acids

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3
Q

It gives off or contribute hydrogen ions into a solution

A

Acids

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4
Q

It is a solution in which the solvent is water

A

Aqueous

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5
Q

It has a pH of greater than 7 to 14

It do not react with metals but it react with acids and tend to taste bitter

A

Bases

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6
Q

It give off or contribute hydroxide ions to a solution

A

Bases

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7
Q

It has a pH of 7 neither acidic nor basic an example of this is pure water

A

Neutral

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8
Q

We can neutralize an acid with the base or neutralize a base with an acid

A

Neutralization

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9
Q

A substance that changes color in the presence of an acid or base

A

Indicator

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10
Q

Give an example of indicators

A

Cabbage juice or litmus paper

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11
Q

Examples of indicators used in acid base reaction

A

Litmus
Phenolphthalein
Methyl orange

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12
Q

pH range of methyl orange

A

4-6

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13
Q

pH range of bromophenol blue

A

6-7

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14
Q

pH range of thymol blue

A

8-9

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15
Q

pH range of phenolphthalein

A

9-10

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16
Q

pH range of alizarin yellow

A

10-12

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17
Q

Methyl orange color for weak acid and conjugate base

A

Weak Acid: orange

Conjugate Base: yellow

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18
Q

Bromophenol blue color for weak acid and conjugate base

A

Weak acid: yellow

Conjugate base: blue

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19
Q

Thymol blue color for weak acid and conjugate base

A

Weak acid: yellow

Conjugate base: blue

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20
Q

Phenolphthalein color for weak acid and conjugate base

A

Weak acid: colorless

Conjugate base: pink

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21
Q

Alizarin yellow color for weak acid and conjugate base

A

Weak acid: yellow

Conjugate base: red

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22
Q

Litmus paper pK indicator

A

6.5

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23
Q

Methyl orange pK indicator

24
Q

Phenolphthalein pK indicator

25
Litmus paper: Blue to Red=
Acid
26
Litmus paper: Red-Blue =
Base
27
Is a chemical compound with the formula C20H1404
Phenolphthalein
28
Phenolphthalein is often written as
HIn or phph
29
It is often used in titrations and it turns colorless in acidic solutions and pink in basic solutions
Phenolphthalein
30
Is an intensely colored compound used in dying and painting textiles
Methyl orange
31
Other names of methyl orange includes
C.I. Acid orange 52 C.I. 13025 helianthine B Orange III Gold Orange Tropaeolin D
32
It is used by the chemist as an indicator in the titration of weak bases with strong acids
Methyl orange
33
Methyl orange changes from ___ to ___
Red (3.1) to orange yellow (4.4)
34
It is a measure of hydrogen ion concentration in an aqueous water solution
pH
35
Formula for pH
pH= -log(H+)
36
Formula for POH
pOH= -log(OH-)
37
At 25° C
pH+pOH=14
38
These are measures of the strengths of acids and bases respectively
pKa and pKb
39
The operator P may mean
Take the negative logarithm of
40
Formula for acids
pKa= -log Ka
41
The____the value of pKa, the____ the acid
Smaller Stronger
42
Formula for base
pKb= -log(Kb)
43
The ___ the value of pKb, the ____ the base
Smaller Stronger
44
It is the acid dissociation constant
Ka
45
The __ the value of Ka, the ___ the acid
Greater Stronger
46
Is the base dissociation constant
Kb
47
The ___ the value of Kb, the ___ the base
Greater Stronger
48
What is the indication of paracetamol
Antipyretic and analgesic
49
Direction to use of paracetamol
PO or by mouth
50
pH range of paracetamol
5.5 to 6.5
51
It is used to treat the symptoms of too much stomach acid such a stomach upset heartburn and acid indigestion
Maalox
52
What is the direction for use of Maalox
PO or by mouth after meals
53
What is the approximate pH range of maalox
8
54
What is the indication of Ceelin
Prevention and treatment of vitamin C deficiency in infants and children
55
It is the most trusted and most prescribed vitamin C supplement for kids which helps boost the immune system for their protection from sickness
Ceelin
56
Direction for use of Ceelin
PO or by mouth, with or without meals
57
pH range of Ceelin
1.0-2.5

PORG LAB (8 decks)

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