Fuming Nitric Acid

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Fuming  Nitric Acid


When NO² gas is dissolved in conc. Nitric Acid, it forms fuming nitric acid. It is also obtained by distilling concerned nitric acid with a little starch. Nitric acid is reduced to No² by starch which dissolves in the remaining acid to from fuming nitric acid. This acid is yellow in colour due to the presence of NO² in it. It is a powerful oxidising agent and nitrating agent as compared to conc. HNO³.

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