Hey guys
what are the limitations of the acid-base theories for laviosier davy arrhenius and B/L?
Hi!
Lavoisier (Acids contained O
2)
Metal oxides tended to be basic
Some oxides do not show any acidic/basic character, eg CO
Some acids do not contain oxygen such as HCl
Davy (Acids contained H
2)
Many compounds containing hydrogen are not acidic (eg methane)
Sometimes nitrogen isn't produced when acids react w/ metal, e.g when HNO
3 reacts w/ metals, NO
2 is produced
Arrhenius (Acids ionised in water to produce H
+ ions, Bases ionise in water to produce OH
- ions)
No dissociated hydroxide ions involved in metallic oxides and carbonates
His model required the formation of ions, yet solid carbonates can quite often neutralise acids
He did not expand on the role of the solvent, instead focussing only on the role of the solute in acids and bases
Why certain solutions of salts are basic or acidic. For example sodium chloride is neutral, zinc chloride is acidic
As far as I can tell, Brφnsted-Lowry has no limitations (current accepted theory)
Hope this helps!