Re: Stock Paint:Gum Solutions?

[Loris Medici <mail@loris.medici.name>]

Alberto, that's a fine bit of information. Thanks for mentioning.

Regards,
Loris.


24 Ekim 2008, Cuma, 11:40 am tarihinde, Alberto Novo yazmış:
> ...
> When expriming concentration, you have to consider also the volume of the
> solute in the final total volume or keep into account the resulting
> density.
> So, using the densities measured by Kees:
> 1+3 = 25% w/w = 25*1.101 = 27.5 w/v
> 1+2 = 33.3% w/w = 33.3*1.132 37.7% w/w
> One among the best example is concentrated sulphuric acid. It is sold as
> 98% w/w, with a density of 1.84 kg/dm2. This means 98*1.84 = 180% w/v.
> This seems absurd, but it simply means that in 100 mL of conc. sulphuric
> acid there are 180 grams of pure substance.
> ...