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Chem 223 > Lab 11 Acid - Base Titrations Parts 1 And 2 > Flashcards

Lab 11 Acid - Base Titrations Parts 1 And 2 Flashcards

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1
Q

What does HCL react with?

A

Reacts with NaOH in a 1:1 stoichiometric ratio
HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq)

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2
Q

What concentration is most commonly determined by conducting a titration

A

Analyte

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3
Q

What can be determined by using an acid-base indicator?

A

Equivalence point

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4
Q

Analyte

A

Is most commonly determined by conducting a titration

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5
Q

What does an acid-base indicator do?

A

Changes color rapidly as the unknown solution goes from acidic to basic

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6
Q

What is an equivalence point?

A

Is reached when the number of moles of standard added equals the number of moles unknown

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7
Q

What does KHP react with?

A

Reacts with NaOH in a 1:1 stoichiometric ratio

HC8H4O4−(aq) + OH−(aq) → C8H4O42−(aq) + H2O(l)

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8
Q

What is an endpoint?

A

Point at which the indicator changes color

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9
Q

What is titration

A

A standard of known concentration is added in a controlled manner to a specific volume of an unknown in order to determine the equivalence point

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10
Q

Hydrochloric acid (unknowns)

A

Corrosive to skin and mucous membranes
Can cause serious eye damage

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11
Q

What are the three primary standards for standardizing solutions of base?

A

High purity
Large formula weight
Water soluble

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12
Q

What is the critical aspect of a titration?

A

To select an indicator so that the endpoint and equivalence point occur simultaneously

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13
Q

Potassium hydrogen phthalate (KHP)

A

Toxicity from ingestion

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14
Q

Sodium hydroxide 0.10 M

A

Corrosive to skin
Can cause serious eye damage
As always you must wear your goggles at all times

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15
Q

Phenolphthalein indicator

A

Flammable liquid
Acute toxicity from ingestion

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16
Q

What is KHP

A

Potassium hydrogen phthalate
Primary standard for standardizing solution of base (high purity, large formula weight, water soluble)

17
Q

What type of concentration is used to determine the equivalence point?

A

Titration

18
Q

What type of concentration is used to determine the equivalence point?

A

Titration

19
Q

Reacts with NaOH in a 1:1 stoichiometric ratio
HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq)

A

What does HCL react with?

20
Q

Analyte

A

What concentration is most commonly determined by conducting a titration

21
Q

Equivalence point

A

What can be determined by using an acid-base indicator?

22
Q

Is most commonly determined by conducting a titration

A

Analyte

23
Q

Changes color rapidly as the unknown solution goes from acidic to basic

A

What does an acid-base indicator do?

24
Q

Is reached when the number of moles of standard added equals the number of moles unknown

A

What is an equivalence point?

25
Q

Reacts with NaOH in a 1:1 stoichiometric ratio

HC8H4O4−(aq) + OH−(aq) → C8H4O42−(aq) + H2O(l)

A

What does KHP react with?

26
Q

Point at which the indicator changes color

A

What is an endpoint?

27
Q

A standard of known concentration is added in a controlled manner to a specific volume of an unknown in order to determine the equivalence point

A

What is titration

28
Q

Corrosive to skin and mucous membranes
Can cause serious eye damage

A

Hydrochloric acid (unknowns)

29
Q

High purity
Large formula weight
Water soluble

A

What are the three primary standards for standardizing solutions of base?

30
Q

To select an indicator so that the endpoint and equivalence point occur simultaneously

A

What is the critical aspect of a titration?

31
Q

Toxicity from ingestion

A

Potassium hydrogen phthalate (KHP)

32
Q

Corrosive to skin
Can cause serious eye damage
As always you must wear your goggles at all times

A

Sodium hydroxide 0.10 M

33
Q

Flammable liquid
Acute toxicity from ingestion

A

Phenolphthalein indicator

34
Q

Potassium hydrogen phthalate
Primary standard for standardizing solution of base (high purity, large formula weight, water soluble)

A

What is KHP

35
Q

Titration

A

What type of concentration is used to determine the equivalence point?

36
Q

Titration

A

What type of concentration is used to determine the equivalence point?

Chem 223 (6 decks)

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