Shihuimin

Shihuimin (talk) 01:29, 22 June 2016 (UTC)here are some confusion in the article “osmotic concentration”. According to the equation[3]Osmolarity=Osmolality*(ρsol-ca),we can consider that: Osmolarity=Osmolality*(water g/solution ml +solute g/ solution ml－Ca)

        =Osmolality*[the mass density of water *( water ml/ solution ml)]
According to IUPAC[6]Osmotic concentration is defined as”Production of the Osmolality and the mass density of water. Formerly called Osmolarity”.”Synonym: Osmolarity”

As water ml≠solution ml. we cannot consider that: “osmotic concentration”and “Osmolarity”.are synonym. And another symbol might be need to use for“osmotic concentration” in IUPAC goldbook.

References International Union of Pure and Applied Chemistry Compendium of Chemical Terminology version2.3.3 2014-02-24 p.1044 http://goldbook.iupac.org/PDF/goldbook.pdf

There are some confusion in the article “Osmotic Concentration”.

There are some confusion in the article “Osmotic Concentration”. According to the equation[3]

Osmolarity = Osmolality*(ρsol-ca)
                   = Osmolality*(water g/solution ml +solute g/ solution ml－Ca)
                   = Osmolality*[the mass density of water *( water ml/ solution ml)]

IUPAC[1] states that Osmotic Concentration is the ”production of the Osmolality and the mass density of water. Formerly called Osmolarity”. As water ml does NOT strictly equal solution ml, the above derivation shows that “osmotic concentration”and “Osmolarity” are not equivalent. In another word, osmotic concentration is NOT a synonym of Osmolarity. I'd also suggest another symbol to be used for “osmotic concentration” in IUPAC Goldbook.

[1] IUPAC goldbook version2.3.3 2014-02-24 p.1044 Shihuimin (talk) 00:34, 23 June 2016 (UTC)