Define Sample Titration - estimation of vitamin c in a solution?
Take the given unknown solution provided to you in a 100 ml volumetric flask. Dilute the sample ascorbic acid solution to the mark with 3% metaphosphoric acid. Mix well.
Pipette 10 ml of this dilute solution into a 100 ml conical flask and titrate against the dye solution till a light pink colour appears which persists for 30 seconds.