ACID-BASE TITRATION

Question 1

is a process or method to determine the concentration of a substance in an unknown solution, in which a known reagent is added to an unknown solution to produce a known reaction such as change in color or electrical measurement.

Answer 1

Titration

Question 2

ADVANTAGES OF TITRATION OVER GRAVIMETRIC ANALYSIS

Answer 2

• Superior Speed

• Convenient with a little sacrifice in accuracy and Precision

• Less expensive and less materials to use

Question 3

BASIC REQUIREMENT FOR SUCCESSFUL TITRATIONS

Answer 3

It must be stoichiometric

Quantitative

Fast

Question 4

USES OF ACID-BASE TITRATIONS

Answer 4

Pregnancy Testing
Aquarium Water Testing
Blood Sugar Testing

Question 5

detect the presence of human chorionic gonadotropin (hCG) in a subject’s urine applied to a test strip or solution.

Answer 5

Home pregnancy testing kits

Question 6

applies titration to a blood sample to measure the specific amount of hCG present in the blood.

Answer 6

pregnancy test

Question 7

monitor changes in water conditions, home test kits are sold containing chemicals to test the pH level of water as well as the levels of ammonia, nitrites, nitrates and phosphates

Answer 7

Aquarium Water Testing

Question 8

Diabetics can measure the amount of glucose in their blood by using a small portable machine called a

Answer 8

blood glucose meter

Question 9

use titration to achieve a desired mix of compound drugs.

Answer 9

Pharmacists

Question 10

Doctors will often employ titration to determine the correct proportion of different medicines in an

Answer 10

intravenous drip

Question 11

Titration is use in food industry

Answer 11

– to test free fatty acid content, unsaturated fatty acids and trace amounts of water.

to determine the estimated chain length of fatty acids in a fat.

to test for the amount of salt or sugar, and the concentration of vitamin C or E, in a product

to test the product’s readiness for consumption in wine and cheese production

Question 12

reaction occurs when equimolar solutions of acids and bases react and create a neutral solution.

Answer 12

neutralization

Question 13

neutralize excess hydrogen ions (H + ) to form water and magnesium chloride salt.

Answer 13

Hydroxide ions (OH - )

Question 14

TWO MAJOR COMPONENTS of titration

Answer 14

Titrant and Analyte

Question 15

is the solution added from the burette.

Answer 15

Titrant

Question 16

It’s concentration is known.

Answer 16

Titrant

Question 17

is the sample to be titrated.

Answer 17

Analyte

Question 18

It has an unknown concentration.

Answer 18

Analyte

Question 19

The ___________ is the point at which the amount of acid and base present exactly neutralizes one another.

Answer 19

equivalence point

Question 20

(number of moles of OH-ions and number of moles of H* ions are equal)

Answer 20

Neutralized

Question 21

is a substance that is generally added to the solution in the receiving vessel an which undergoes some sort of color change when reaction is over.

Answer 21

Indicator

Question 22

The end point of titration is the point when the

Answer 22

indicator changes color

Question 23

The ___________ on a titration curve is where the moles of acid are equal to the moles of base.

Answer 23

equivalence point

Question 24

The equivalence point on a titration curve is where the ________ are equal to the __________.

Answer 24

moles of acid are equal to the moles of base

Question 25

Equivalence point is a reaction known as

Answer 25

neutralization reaction.

Question 26

Key equation:

Answer 26

CAVA = CBVB

Question 27

3 TYPES OF ACID-BASE TITRATION

Answer 27

(A)Strong Acid-Strong Base Titration
(B) Strong Acid-Weak Base Titration
(C) Weak Acid-Strong Base Titration

Question 28

HCl versus NaOH

Answer 28

(A)Strong Acid-Strong Base Titration

Question 29

HCl versus ammonia

Answer 29

(B) Strong Acid-Weak Base Titration

Question 30

NaOH versus acetic acid

Answer 30

(C) Weak Acid-Strong Base Titration

Question 31

: When sample is an acid

Answer 31

Acidimetry

Question 32

: When sample is a base

Answer 32

Alkalimetry

Question 33

– is the center of all titrations and it should be standardized first before you will use it, thus the name standard solution

Answer 33

Titrant

Question 34

Titrant is also

Answer 34

Standard solution

Question 35

Properties of a titrant

Answer 35

– Be sufficiently stable
– React rapidly to the analyte
– React more or less completely with the analyte
– Undergo a selective reaction with the analyte

Question 36

Acid Titrants

Answer 36

Hydrochloric acid
Dilute solutions of perchloric acid
Dilute solutions of Sulfuric acid

Question 37

acid titrant most commonly used

Answer 37

Hydrochloric acid