Iodine can de used in several ways. First as a disinfectant before a medical procedure such as surgery of getting stiches. It can be used for a vitimin supplement in individuals with iodine deficeincy (very rare in the USA). It can also be used to destroy the thyroid in cases of thyroid cancer. Since the thyroid is the primary user and absorber of iodine in the body, radioactive iodine in injected into the body and the thyroid absorbs it destroying the cancer as well as the thyroid. In addition, iodine can be used in patients in thyroid storm. By giving iodine to patients in storm, it induces a blockege of T3 and T4 release which is known as the Wolff Chaikof effect.
I believe they use it in a topical cream for burns called Silvadine, but I'm not positive.
Silver halides are essential for developing photographic film.
Nano-silver is used medically to coat equipment and to keep environments sterile (such as amphitheatres) as nano-silver works as an anti-bacterial, viral and fungal.
The products are Silver chloride (a white precipitate) and potassium ethanoate (acetate). NB THis is a classic test for halides.
Because even though silver halides are way more photosensitive, silver nitrate is a bit, and storing in a bottle which lets the light pass through freely would affect it shelf life.
only silicon halides contain silicon. others dont
This is a precipitation reaction. Halides of silver are insoluble in water (except silver fluoride) whereas all nitrates are soluble in water. Sodium salts are soluble. Thus, silver iodide is the precipitate. Formula: AgNO3(aq) + NaI(aq) -> AgI(s) + NaNO3(aq)
If you think to halogens (not halides) bromine is a liquid.
Siver Halides are neither a metal or an alloy. They are a salt.
Silver halides absorb light to form elemental silver. This is the basis for the photographic film. This is an unusual reaction and is certainly not common to all ionic compounds. Silver halides are also unusually insoluble, again not a common property of ionic compounds. In fact silver halides have quite a lot of covalent character! I am sure teacher has something in mind but its certainly not in mine.
Any practical uses.
Silver salts. Mainly silver halides.
Silver halides contain the metal (Ag, silver) and a halogen: F, Cl, I, Br.
They turn black
Solubility of the silver halides decreases down the group.The solubilities of silver halides decreases down the periodic table:AgF :Ksp=205AgCl:Ksp=1.8×10−10AgBr:Ksp=5.2×10−13AgI :Ksp=8.3×10−17
It removes undeveloped silver halides from photographic emulsions. This leaves the silver behind, giving you a prnt that won't eventually turn black (because silver halides will eventually turn black on their own) or a negative light will pass through.
Decomposition of silver halides under light irradiation.
No, most silver halides are insoluble.
There are three silver halides used: silver bromide, silver chloride and silver iodide. Silver chloride doesn't absorb very much light and silver iodide is hard to develop. So they use silver bromide, with a little bit of the other two to make the emulsion work in ways silver bromide can't do alone.
For photographic plates silver halides are used.