Pipette 50 ml sample into a 250 ml Erlenmeyer flask.

Add 3 drops of alcoholic Phenolphthalein indicator into sample.

Ensure complete mixing.

Titrate sample using Sodium Hydroxide solution.

Endpoint is a persisting pink coloration.

Repeat the steps for blank using distilled water instead of sample.

Calculate Acidity using volume of NaOH titrant.


Related Posts :
Chloride Content in Water
Alkalinity in Water
Hexavalent Chromium ( Cr6+) in Water
Nitrates (NO3) in Water
Calcium , Magnesium & Total Hardness in Water