Performing Volumetric Analysis (HSC SSCE Chemistry): Flashcards

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Performing Volumetric Analysis
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Volumetric analysis

Quantitative technique to find unknown solution concentration

Titrant

Solution in burette with known concentration

Analyte

Solution with unknown concentration being analysed

Why acid placed in burette

Bases can etch glassware and change calibrated volume

Drops of indicator to add

Two drops

Signal of titration end point

First permanent colour change

Concordant results criterion

Within 0.030.03 mL

Indicator: strong acid-strong base

Bromothymol blue

Indicator: weak acid-strong base

Phenolphthalein

Indicator: strong acid-weak base

Methyl orange

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