Talk:Dinitrogen trioxide

Old infobox for reference

**Properties**
General
Name	Dinitrogen trioxide
Chemical formula	N₂O₃
Appearance	Blue liquid
CAS number	10544-73-7
Physical
Formula weight	76.01 amu
Melting point	171 K (-102 °C)
Boiling point	276 K (3 °C)
Density	1.4 ×10³ kg/m³ (liquid)
Odor	Slightly irritating
Thermochemistry
Δ_fH⁰_gas	91.200 kJ/mol
Δ_fH⁰_liquid
S⁰_{gas, 1 bar}	314.626 J/mol·K
Safety
Ingestion	Hazardous due to decomposition to toxic gases
Inhalation	Hazardous due to decomposition to toxic gases
Skin	May burn and stain skin yellow due to decomposition to NO₂
Eyes	Will cause severe burns
More info	Hazardous Chemical Database
SI units were used where possible. Unless otherwise stated, standard conditions were used. Disclaimer and references

structure and bonding

are wikipedia sure that that is correct?!What do i want to... (talk) 14:13, 30 November 2009 (UTC)What do i want to... 30/11/09 14:13[reply]

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incorrect redirection

Wikipedia search "nitrogen trioxide" redirects not to Nitrate but here to (di)nitrogen (II) trioxide.

In some situations of chemistry one is to assume the number of the + ion if the - ion allows no other choice: which is NOT the preferred way to leave the notation (it is considered sloppy). But that's not the case here: there IS more than one long known choice, so the redirection is incorrect.

The article for Nitrate is well cited. — Preceding unsigned comment added by 2600:8806:400:1CF0:A4C7:AEA0:F1BE:E7CB (talk) 22:26, 10 April 2018 (UTC)[reply]

Not a Solid?

Why does the article say that it is a solid when its melting point is less than -140 degrees Fahrenheit? I thought that ordinary room temperature and ordinary atmospheric pressure were supposed to be the reference for the state of a substance. Is this because it is a solid at the highest temperature at which it is stable.24.191.117.99 (talk) 02:36, 17 June 2021 (UTC)[reply]

Density

How can the density of N₂O₃ be higher when it is a gas than when it is a liquid? What conditions are involved? Or is this an error?

Oxidation states of nitrogen

"All atoms and bonds of dinitrogen trioxide molecule contribute to the resonancy. The oxidation state of the nitrogen atom of the nitroso group is +3, while the oxidation state of the nitrogen atom of the nitro group is +5."

This does not add up. Not sure whether they are really +2 and +4 or, counting inductuve polarization from the additional oxygen, both +3. Olthe3rd1 (talk) 11:08, 11 December 2023 (UTC)[reply]