Answer Posted / atul patel

Karl Fischer titration is a widely used analytical method
for quantifying water content in a variety
of products. The fundamental principle behind it is based
on the Bunsen Reaction between iodine
and sulfur dioxide in an aqueous medium. Karl Fischer
discovered that this reaction could be
modified to be used for the determination of water in a non-
aqueous system containing an excess of
sulfur dioxide. He used a primary alcohol (methanol) as the
solvent, and a base (pyridine) as the
buffering agent.

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