問題一覧
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used in analytical chemistry to determine acids, bases, oxidants, reductants, metal ionn, proteins and many other species
titration
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largely derived from application of the priciples of solution chemistry represent some of traditional aspects of chemical analysis
titrimetric and gravimetric analysis
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a way of determining acid or bases in a concentration
titration
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common lab method to define the concentration of an identified analyte
titration
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the overall procedure for the determinations of stoichiometric or equivalence point
titration
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the solution added or reagent generated in a titration
titrant
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-aka known solution - used only in TITRATION -base
titrant
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-the solution which the titrant is added
titrand
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- aka the unknown solution - aka THE ANALYTE - substance being analyzed -acid
titrand
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a point in the progress of the rection which may precisely located and which can be related to the stoichiometriy or equivalence pint of the reaction
endpoint
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the goal is to neutralize the analyze solution
end point
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point where indicator changes in color
endpoint
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comes AFTER the equivalence point
endpoint
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cone BEFORE the end point
equivalence point
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the point in titration when the amout of standard reagent is equivalent to the amout of analyte
equivalence point
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weak acid can have ____ equivalent point
multiple
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weak acids can only have _____ end point
one
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the reagent or device used to indicate when the end point has been reaches
indicator
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are used in titrations and many other chemical analysis
standard solution
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a reagent of known concentration
standard solution
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an ultra pure compound that serves as the reference material for a titration
primary standard
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a compound whose whose purity has been determined by chemical analyses
secondary standard
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serves as the working satandard material for titrations and for many other analysis
secondary standard
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a process in which the excess standard solution used to consume an analyte is determined by titration with a second standard solution
back titration
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the mass of a reagent is measured instead of its volume
gravimetric titration
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titration without an analyte being present, only the solvent used in an analyte concentration
blank titration
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involve measuring the volume of a solution of known concentration
volumetric titration
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quantitative determination of analyte concentration through process of precipitation of the analyte, isoslation of the precipitate & weighing the isolated product
volumetric titration
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measuring total charge (current x time)
coulometric titration
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the "reagent" is a constant direct electrical current of known magnitude that consumes the analyte
coulometric titration
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used to find the concentration of an acid/base in a solution by neutralizing reaction
acid base titration
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an oxidant can be estimated by adding known reduction or vice-versa
redox titration
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involves formation of precipitates
precipitation titration
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involves formation of complexes (metal x ligand)
complexometric titration
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determining the amount of substance present in the form of solution along with another solution
double titration
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determines the amount of matter transformed during an electrolysis reation during an electrolysis reaction by measuring the amount of electricity
coulometry
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point where it change in chemical property
equivalence point
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titration methods are often called as _____
titrimetric method