Transcription of TITRIMETRIC ANALYSIS - NCERT
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TITRIMETRIC ANALYSIS - NCERT
UNIT-6 TITRIMETRIC ANALYSISYOU are already aware that a substance is analysed to establish its qualitativeand quantitative chemical composition. Thus, chemical ANALYSIS can becategorised as qualitative ANALYSIS and quantitative ANALYSIS . In this unityou will learn about determination of the amount of substance in solution. Dependingupon the method adopted for determining the amount of chemical substances insolution, there are two methods of ANALYSIS namely, TITRIMETRIC ANALYSIS andgravimetric ANALYSIS . In TITRIMETRIC ANALYSIS measurement of only volumes is involvedwhile in gravimetric ANALYSIS measurement of volumes as well as mass is ANALYSIS involves determination of the volume of a solution ofaccurately known concentration, which is required to react quantitatively withthe measured volume of the solution of a substance, concentration of which is tobe determined.
(Bronsted-Lowry base) Fig. 6.2 : Structures of Methyl orange Choice of Indicator In the titration of strong acid and a weak base, methyl orange is chosen as indicator. When titration between strong base and weak acid is to be performed then phenolphthalein is a good indicator. In this case alkali is dropped from the burette and acid is taken in
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