Talk:Chromite (compound)

Formula
The formula for a chromite is needed... --Chemicalinterest (talk) 17:52, 15 June 2010 (UTC)
 * Done! --Chemicalinterest (talk) 13:31, 16 June 2010 (UTC)

Chromous acid
Chromous acid is not entirely hypothetical.

I don't know if Cr(OH)3 (i.e. H3CrO3) has ever been detected, but remove H2O from the formula and you have HO-Cr=O, i.e. HCrO2, which is better known as chromium(III) oxide hydroxide, CrO(OH), grimaldiite. This is a stable mineral whose crystal structure has been determined many times.

Ben (talk) 17:47, 16 June 2010 (UTC)


 * Has this been characterized as chromous acid, then? As in, it can be deprotonated to form salts containing ?&mdash;Tetracube (talk) 19:13, 16 June 2010 (UTC)


 * Hmm, need some help here. Does the ion actually exist as a distinct anion (either in crystal or in solution)? Or is it merely a simplification from earlier work when the nature of the hydrated complex  is not yet known? I'm wondering because the article currently states that sodium chromite is a salt of, but then proceeds to display an equation involving . Also, I noticed that in the literature sodium chromite is written both as  and . What is the "real" formula for sodium chromite? Or are these the same salt hydrated to different extents?&mdash;Tetracube (talk) 19:48, 18 June 2010 (UTC)