Analytical Chemistry |
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Pagina 504
At high concentrations , however , marked departures are often observed , and
conclusions that are based on the constancy of K must be modified accordingly .
Fortunately the concentrations in a chromatographic column are frequently low .
At high concentrations , however , marked departures are often observed , and
conclusions that are based on the constancy of K must be modified accordingly .
Fortunately the concentrations in a chromatographic column are frequently low .
Pagina 507
The ability of a column to separate two solutes is directly dependent upon the
number of equilibrations , that is , upon the number of plates . Column efficiency
is measured by the number of plates N contained in each centimeter of column or
...
The ability of a column to separate two solutes is directly dependent upon the
number of equilibrations , that is , upon the number of plates . Column efficiency
is measured by the number of plates N contained in each centimeter of column or
...
Pagina 509
As a zone moves down the column , migration occurs for a greater time and the
zone profile becomes broader and lower . Thus the breadth of the zone is directly
related to its residence time in the column and is inversely related to the flow rate
...
As a zone moves down the column , migration occurs for a greater time and the
zone profile becomes broader and lower . Thus the breadth of the zone is directly
related to its residence time in the column and is inversely related to the flow rate
...
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Sommario
Preface | 1 |
A Review of Some Elementary Concepts | 8 |
A Review of Simple Equilibrium Constant | 24 |
Copyright | |
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absorbance absorption acid activity added addition amount analysis analyte application approximately balance base becomes Calculate carbonate cause cell Chapter chemical chloride chromatography color column common complex concentration considered constant containing curve described determined deviation difference dilute direct Discussion dissociation dissolved drop effect electrode employed end point Equation equilibrium equivalence point error example excess exist expression Figure filter flask formation give given glass heating hydrogen hydroxide important increase indicator involves iodine less limited liquid liter mean measurements metal method NaOH needed Neutralization Note obtained occurs organic oxidation phase potassium potential precipitate prepared presence problem Procedure quantity radiation reaction reagent reduced region relative sample separation shown silver sodium solid solubility solution species standard substance surface Table temperature titration volume volumetric weight