Required Practicals
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C4: Titration - equipment
burette pipette and filler conical flask and white tile an acid sodium hydroxide (alkaline) a suitable indicator,
C4: Titration - suitable indicator
methyl orange or phenolphthalein
C4: Titration - method
-Use the pipette add 25 cm3 of alkali to conical flask. -Add a few drops of indicator and put the conical flask on a white tile. -Fill the burette with acid -Slowly add the acid from the burette to the alkali swirling to mix. -Stop adding the acid when the end-point is reached -Note the final volume reading.
C4: Titration - safety
-wear eye protection -wear gloves as alkali is corrosive
C4: Titration - meaning
a method of measuring 2 volumes of 2 solutions that react together -eg acid/alkali = neutralisation
C4: Titration - end point meaning
-where acid and alkali have completely reacted -measure by indicator -indicator changes colour permanently