Unit 8 – Acid-base Titration Flashcards
It is a method of quantitative analysis for determining the concentration of an acid/base by neutralizing it with standard solution of base/acid.
Acid-base Titration
Types of acid-base titration
Alkalimetry
Acidimetry
It is the determination of BASIC CONTENT in a sample by titrating it with a standard acid solution.
Alkalimetry
It is the determination of ACID CONTENT in a sample by titrating it with a standard acid solution.
Acidimetry
T/F
In ALKALIMETRY, the BASIC CONTENT should be titrate with ACID.
T
T/F
In ACIDIMETRY, the ACID CONTENT should be titrate with a standard BASIC solution.
T
It is the course of an acid-base titration that is best followed by examining the pH as the titration progresses.
Titration Curve
It provides a visual picture of how the property of the titration reaction changes as the titrant is added to the analyte.
Titration Curve
Stages in the titration
Pre-equivalence point
Equivalence point – end point
Post-equivalence point
Equivalence points in acid-base titrations are determined most often using _____ that change color at or near equivalence point.
Chemical indicators
_____ are WEAK ORGANIC acids or bases whose conjugate forms have different colors.
Acid-base indicators
T/F
It must be WEAKER than the ANALYTE acid or base that it reacts last with the titrant.
T
An average observer visualizes color imparted by a typical indicator within concentration ratio: _____
[Hin] / [In-] = 10 to 0.1
It is the point in titration having the GREATEST SLOPE.
Inflection point
It very nearly coincides with the equivalence point.
Inflection point