The reason for the yellow color of the concentrated nitric acid needs to be explained. The pure nitric acid is colorless. Concept introduction: The decomposition of concentrated HNO 3 is shown as follows: 4HNO 3 ( aq ) → 4 NO 2 ( g ) + O 2 ( g ) + 2 H 2 O ( l ) It results in the release of nitrogen dioxide and oxygen gas.

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Chapter 21, Problem 69QAP

Interpretation Introduction

Interpretation:

The reason for the yellow color of the concentrated nitric acid needs to be explained. The pure nitric acid is colorless.

Concept introduction:

The decomposition of concentrated HNO3 is shown as follows:

4HNO3(aq)→4NO2(g)+O2(g)+2H2O(l)

It results in the release of nitrogen dioxide and oxygen gas.

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