Fundamentals of Analytical ChemistryHolt, Rinehart and Winston, 1969 - 835 pagine |
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Pagina 257
... color . Without discussing the nature of the structural rearrangements , we can sym- bolize the association or dissociation reaction of an acid - base indicator as follows : H2O + HIn H3O ++ In ̄ ( acid color ) ( base color ) or In + ...
... color . Without discussing the nature of the structural rearrangements , we can sym- bolize the association or dissociation reaction of an acid - base indicator as follows : H2O + HIn H3O ++ In ̄ ( acid color ) ( base color ) or In + ...
Pagina 258
... color of the solution appears to change . Thus , the subjective " color change " involves a major alteration in the position of the indicator equilibrium . Using HIn as an example , we may write that the indicator exhibits its pure acid ...
... color of the solution appears to change . Thus , the subjective " color change " involves a major alteration in the position of the indicator equilibrium . Using HIn as an example , we may write that the indicator exhibits its pure acid ...
Pagina 357
... color is discharged . 3. The amount of MgY2- solution added is not critical . Its presence is re- quired because the indicator does not exhibit a satisfactory color change when Ca2 + is present alone . Since the calcium chelate is more ...
... color is discharged . 3. The amount of MgY2- solution added is not critical . Its presence is re- quired because the indicator does not exhibit a satisfactory color change when Ca2 + is present alone . Since the calcium chelate is more ...
Sommario
1 The Scope of Analytical Chemistry | 1 |
2 Review of Elementary Concepts Important to Analytical Chemistry | 7 |
3 The Evaluation of Analytical Data | 25 |
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2H₂O absorbance absorption acetic acetic acid acid solution addition AgNO3 alkaline analysis analytical anode application aqueous base buffer calcium Calculate carbonate cathode cations cell cerium(IV chemical chloride color complex compounds copper(II coulometric crucible determined dilute dissociation dissolved EDTA electrolyte employed end point equation equilibrium constant equivalence point error ethanol example excess F with respect Fe3+ filter flask formal concentration formation glass H₂O H3O+ half-reaction hydrochloric acid hydrogen ion hydronium ion indicator iodide iodine ion concentration iron(III liquid measurement mercury(II metal method mixture mole/liter NaOH obtained oxalate oxidation particles percent perchloric acid permanganate potassium precipitate procedure quantity radiation reaction reagent reduced result salt sample saturated calomel electrode silver ion sodium solid solubility solution containing solvent species standard hydrogen electrode standard solution substance sulfate sulfuric sulfuric acid temperature tion titration titration curve volume volumetric wavelength weak acid