Question

oxide of Nitrogen which turns Reddish brown when exposed to air​

Answer 1

hey mate!

nitrogen dioxide is your answer (NO2)

hope it helps

Answer 2

Nitric oxide turns Reddish brown when exposed to air​.

Explanation:

• Nitric acid with chemical formula $HNO_3$ has yellowish brown colour because of the  presence of dissolved nitrogen dioxide.

• This slowly decomposes even at room temperature, specifically in the presence of sunlight liberating reddish brown nitrogen dioxide gas

• Nitric oxide  turns  to brown color due to the reaction with oxygen present in the air  giving out  nitrogen dioxide $2NO+O_2$  ⟶$2NO _2$

• It is also known as "red fuming acid" or "fuming nitric acid".

Learn more about Nitric acid:

Explain the following: dilute nitric acid is generally considered a typical acid but not so in it reacts with metal

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Write preparation of nitric acid by ostwald process

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