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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: Asim on August 06, 2021, 09:21:21 PM

Title: Standardization of 0.004M Benzethonium chloride
Post by: Asim on August 06, 2021, 09:21:21 PM
Hello all,
I want to know how to standardise 0.004M benzethonium chloride?? The process i read from the book is beyond the understanding..
Preparation: 1.729 g of benzethonium chloride in 1000 ml of water.
Standardization: 0.350g of dried substance in 35 ml volume of mixture of 30% Anhydrous acetica cid and 70% of Acetic Anhydride. Titrate with 0.1M perchloric Acid using 0.05 ml in crystal voilet as indicator.
Can anyone tells me another process for standardization?, or any easy way for this written standardization??
Title: Re: Standardization of 0.004M Benzethonium chloride
Post by: Borek on August 07, 2021, 03:39:57 AM
Which part you don't get?

Smelly and has to be done in fume hood, other than that typical non aqueous titration. Just the titrant is used as a water solution, but water is immediately consumed by the acetic anhydride to produce more acetic acid (which you can think of as if it was the solvent for the titration).