Question

is it possible to convert NO to N2O in our atmosphere? Explain why or why not

Answer 1

Denitrification: Nitrate not used by plants can go through further chemical change to be converted back to atmospheric gaseous nitrogen (N2). Again, this happens through specialised bacteria (known as denitrifying bacteria). These bacteria operate in the absence of oxygen (in anaerobic conditions such as water-logged soil). These bacteria also need a food source. Denitrifying bacteria use carbon compounds (organic matter) for their energy needs. In the absence of oxygen, the bacteria process nitrate to gain the oxygen they need to break down the food source. This reduces nitrate back to the gaseous nitrogen N2. If the chemical reaction is not completed, byproducts are released such as nitrous oxide (N2O).)

N2O, or nitrous oxide, and some NO, or nitric oxide, are produced by bacteria in the soil and in the oceans. Nitrous oxide is relatively unreactive in the troposphere and is the main source of nitric acid and other nitrates in the stratosphere. This is important in the chemistry related to ozone destruction in the stratospheric ozone layer. Nitrous oxide is relatively non-toxic and is used as an anesthetic and as a propellant for whipped cream in cans.