Some observations concerning the direct titration of nitrite with cerium(IV).
Direct titration of nitrite with cerium (IV), with ferroin as indicator, is shown to give satisfactory results if the acidity is kept between 0.033 and 0.055M at the end-point. Loss of nitrous acid owing to volatilization and decomposition is discussed. From 10 to 60 mg of sodium nitrite can be estimated with a standard deviation of 5 mug and an average error of 0.2%.
Muralikrishna
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Analytical Chemistry Laboratories, Department of Chemistry, Andhra University, Waltair 530003, India.
Subrahmanyam
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Suryanarayana
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Krishnamurthy
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