What is the "chlorine" compound used in tapwater..? And what is "chloramine"..? How do they both do what they do?
I ask this after seeing a "Chloride Test Kit", and it made me start thinking about a few things:
- "chlorine" and "chloride" are not the same thing
- "chlorine" as used in tapwater and swimming pools probably is not elemental chlorine, as it would evaporate. so i figure its probably some kind of multi-pronged molecule that likes to play harbour-mine and breaks up into different smaller nasty bits when it comes in contact with something that sets off its fuse
- a "chloride test kit" is probably for chlorine ions like sodium chloride amd potassium chloride.
- since putting salt in water does not make bleach, it would seem free CL ions do not make "chlorine". nor does it go boom when the sodium ions hit the water like metallic sodium would. so seems to me chlorine and "chlorine" are not the same thing.
- maybe "chlorine" releases di-atomic chlorine gas (CL2) in the water and that's what does it? perhaps like O2 or the nastier ozone O3...? What happens to the rest of the molecule? what by-products are left behind?
Perhaps a good discussion and/or review of ions and "dissociation" is in order. And of course this would apply to not just chlorine, but all the other ionic "-ite" and "-ate" compunds and such that we have in our tanks.
I know my vocabulary would make it sound like I should now these things, but I am just remembering random patches of topics from the fourm, science shows on tv, and high school chemistry class.....ummm...17 years ago...
I could Google it, but that would be like asking how butter works in chocolate chip cookies and trying to Google "butter"... See my point...?
I was hoping for some directly aquarium-related discussion of these topics.