2006-06-06 01:21:10 · 4 answers · asked by Ergo 2 in Science & Mathematics ➔ Chemistry
The low technology approach is to use a densitometer. This can be as simple as a hydrometer as used in the brewing industry to check for specific gravity (density). From a measured density and a known volume and if you know the densities of both liquid components of a binary mixture you can work out the relative proportions of each using simultaneous equations and hence the concentration of one in the other.
2006-06-07 01:16:00 · answer #1 · answered by RX-8man 3 · 6⤊ 1⤋
How can you spectrometrically determine the concentration of a solution with electromagnetic energy?
Depends on the materials in solution. Just because a material has no absorbance in the VISIBLE part of the electromagnetic spectrum doesn't mean it has no absorbances at all. Try Infra-red or UV regions -- Beer's Law works for them, too.
Another approach is to use a compound that will form colored compound with the target molecule, and then do a standard absorbance analysis.
2006-06-06 12:53:32 · answer #2 · answered by Dave_Stark 7 · 0⤊ 0⤋
You can't see it if it's a colorless homogeneous mixture. But you could do tests to identify the substances and their concentration.
2006-06-06 12:26:50 · answer #3 · answered by b 3 · 0⤊ 0⤋
It may change its refractive index.
2006-06-07 13:22:54 · answer #4 · answered by Anonymous · 0⤊ 0⤋