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The brown coloration in nitric acid prepared in the laboratory can be removed by?

Chemistry
JAMB 1981

The brown coloration in nitric acid prepared in the laboratory can be removed by?

  • A. heating the acid
  • B. bubbling air through the acid
  • C. cooling the acid
  • D. adding a decolorizing agent
  • E. adding a base
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Correct Answer: Option B
Explanation

The color of nitrogen dioxide is reddish brown. This nitrogen dioxide when comes in contact with acid appears yellow in color.

This means the color of nitric acid can be removed by bubbling air through acid.

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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