Pure nitric acid is colourless, on standing it becomes yellow. Justify – InterviewSolution

1.	Pure nitric acid is colourless, on standing it becomes yellow. Justify your answer.
Answer» Solution :Nitric ACID DECOMPOSES on exposure to sunlight or on being heated, into nitrogen dioxide, water and oxygen. `4HNO_(3)rarr4NO_(2)+2H_(2)O+O_(2)` Due to this reaction pure acid or its CONCENTRATED solution becomes yellow on standing.

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