Chemistry, asked by sowmikatina2001, 1 year ago

why is urea added in the determination of copper in brass

Answers

Answered by snigdha74

The purpose of adding urea to determine copper in brass is to destroy excess of nitrous acid and oxides of nitrogen which interfere with the determination.

If they are not destroyed, they also oxidise KI to I2 which should have been done by Cu2+ ions.

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