Can light go through a solution?

Answer 1

If you use a regular white-light flashlight with incandescent bulb, and shine it at right angles through a narrow clear class cylinder filled with almost any solution, the light beam will shine right through the solution and exit on the other side of the cylinder. The color might be changed by the solution, but in general, a beam of light will exit the other side of the cylinder. Examples: a beam of white light will exit a solution of sugar in water as a beam of white light; a beam of white light will exit a solution of potassium chromate as a beam of orange light.

Suspensions differ from solutions in that they are made up not of individual molecules of a solute interacting with molecules of a solvent, but rather of solid particles of perhaps thousands or millions of molecules floating in a liquid which is not a solvent for the solid in question. Light either can't pass through these particles individually or is refracted randomly in the container, so if there are enough of them floating in the liquid, no light at all will pass to the other side of the cylinder. Examples: a beam of white light will not exit a thick suspension of micronized aluminum metal particles in water; a beam of white light will not exit a thick suspension of carbon black in water; a beam of white light will visibly illuminate a suspension of clear silica in water (via internal reflection and refraction), but wont pass through to the other side.

Answer 2

Because the particles or molecules of the solution is too small that light could not enter in it,and we can not see the beam of light passing through it

Answer 3

Depending on the solution, but in most cases it'll slow down to a mere crawl.

Answer 4

Some part of the radiation is absorbed or reflected.