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Volumetric Analysis
Midterm Exam
10
Chemistry
Undergraduate 1
02/27/2010

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Term
back titration
Definition
one in which an excess of standard reagent is added to react with the analyte. then the excess reagent is titrated with a second reagent or with a standard solution of analyte
Term
end point
Definition
the point in a titration at which there is a sudden change in a physical property, such as indicator color, pH, conductivity, or absorbance. Used as a measure of the equivalence point.
Term
equivalence point
Definition
the point in a titration at which the quantity of titrant is exactly sufficient for stoichiometric reaction with the analyte
Term
indicator
Definition
a compound having a physical property (usually color) that changes abruptly near the equivalence point of a chemical reaction
Term
primary standard
Definition
a reagent that is pure enough and stable enough to be used directly after weighing. the entire mass is considered to be pure reagent.
Term
standard solution
Definition
a solution whose composition is known by virtue of the way that is was made from a reagent of known purity or by virtue of its reaction with a known quantity of a standard reagent
Term
standardization
Definition
the process of determining the concentration of a reagent by reaction with a known quantity of a second reagent
Term
titrant
Definition
the substance added to the analyte in a titration
Term
titration
Definition
a procedure in which one substance is carefully added to another until complete reaction has occurred. the quantity of titrant required for complete reaction tells how much analyte is present.
Term
volumetric analysis
Definition
a technique in which the volume of material needed to react with the analyte is measured
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