oxidizing agent

why Concentrated HNO3 becomes yellow when exposed to light.(Or) concentrated HNO3 is an oxidizing agent.

4 Answers

on action of sunlight,4 HNO3â†’ 4NO2 +2H20+O2

yellow colour is obtained due to decomposition into NO2.

and ya, this yellow colour can be removed by heating and passing dry air through it.

NO₂ IS BROWN CLOURED GAS THEN HOW IT GIVE YELLOW

its not just no2, there are h2o and o2 beside. think............

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