What is Nitrogen Trioxide?
Nitrogen trioxide (molecular formula N2O3) is a chemical compound formed by mercury and chlorine. It is also known as dinitrogen trioxide or nitrogen sesquioxide. The compound is highly toxic and irritates the mucous membranes. Nitrogen trioxide is a blue liquid accompanied by a sharp and unpleasant chemical odour. Density 1.447 g / cm³. Due to the low-boiling point of 3.5 degree C, the compound is held as a liquid by compression. Partially dissociates into NO and NO2. Strong irritant to skin, eyes and mucous membranes. Vapours are very toxic by inhalation. They are used in special-purpose fuels. The prolonged exposure to heat may cause the container to rupture violently and burst out.
NO + NO2 ⇌ N2O3
Properties of Nitrogen Trioxide N2O3
Nitrogen trioxide (molecular formula N2O3) has a molecular weight of 76.012 g / mol and density of 1.447 g / cm³. It has a hydrogen bond donor count of 0 while the hydrogen bond donor count is 4. The boiling point and melting point of nitrogen trioxide is 3.5 degrees C and -100.7 degree C.
Some other properties of nitrogen trioxide N2O3 are mentioned below:
XLogP3-AA – -0.1
Rotatable Bond Count - 0
Exact mass - 75.990892 g / mol
Monoisotopic Mass - 75.990892 g / mol
Topological Polar Surface Area - 75.2 Å²
Heavy Atom Count – 5
Complexity – 50.4
Covalently-Bonded Unit Count – 1
Compound Is Canonicalized – Yes
Solubility in water – Yes
Uses of Nitrogen Trioxide
Properties of Nitrogen Trioxide N2O3 is used in the following ways:
Due to its highly explosive nature, it is used as a particular purpose fuel.
It supports the only combustion and only helps in burning, but does not burn itself which may ignite substances like wood, paper, oil, clothing, etc.
It is a powerful oxidizer.
It is combined with other chemical compounds to be used as an oxidizing agent.
It is also used in the chemical industry, such as in making nylon, dyes, etc.
Structure of Nitrogen Trioxide
Nitrogen – nitrogen (N – N) bonds are almost the same in length to that in hydrazine, that is, 145 pm. However, Dinitrogen trioxide has a long N–N bond of 186 pm, which is unusual. Some nitrogen oxides contain long N–N bonds, which include dinitrogen tetroxide (175 pm). The Nitrogen Trioxide molecule has a planar structure and exhibits Cs symmetry.
It produces unstable nitrous acid (HNO2) when mixed into water. An alternative structure for the true anhydride, i.e. O=N–O–N=O, but this isomer is not observed. If the nitrous acid produced is not used up quickly, then it decomposes into nitric oxide and nitric acid. Sometimes, nitrite salts are produced by adding N2O3 to solutions of some bases like NaOH.
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Q. Nitrogen Trioxide (N2O3) is / has a _ While Nitrogen Dioxide (NO2 ) is / has a _.
Brown gas, Blue gas
Colourless solid, brown gas
Colourless solid, colourless gas
Blue solid, Brown gas
Dinitrogen trioxide (N2 O3 ) is solid in blue colour. Nitrogen has an oxidation number of +3 while NO2 is a gas in brown colour. The oxidation number of nitrogen in the compound is +4. Therefore, the answer is 4.
Q. Assertion: N2 O3 is Less Basic than P2 O3.
Reason: As we go down the group, the metallic nature increases.
The reason is the correct explanation of assertion and both assertion and reason are true.
The reason is not the correct explanation of assertion and both assertion and reason are true.
The reason is false and the assertion is true.
The assertion is not true and the reason is true.
Solution: When we go down the group, atomic radius increases, due to this ionization energy decrease and hence a tendency to lose electrons also increases (i.e., the metallic character is increased).
Since metallic characters increase down the group, the basicity increases down the group.
Hence the order of basicity is N2O3 <P2O3.
Therefore, the answer is 1.
Q. What is the Chemical Formula of Nitrogen Trioxide?
Solution: The chemical formula of nitrogen trioxide is N2O3.