Add 20 g iodized salt and 25 mL ethanol to a jar, tighten lid and shake vigorously. Let the jar sit for 5-10 min and shake occasionally.
Filter the solution into a shallow bowl or plate and evaporate until dry. A steam bath or hot plate may be needed to quicken the evaporation. (Caution: ethanol is flammable)
Add 5 mL of 3% hydrogen peroxide to the bowl and warm it slightly until the residue is dissolved.
Carefully transfer the solution to a small jar, add 1-2 mL of petroleum ether or alternative, tighten the lid and shake. The petroleum ether, hexanes, and pentane should turn slightly (pink due to the presence of iodine. If diethyl ether is used the solution will turn a faint yellow colour. Try to use a jar that will allow the diethyl ether to form a thin layer a couple of millimeters thick.
A standard can be made to compare the colour change. Add 5 mL of diethyl ether to 10 mL of hydrogen peroxide in a small jar. Add a few drops of a KI or NaI solution and observe the (colour change in the ether layer.
sublimation
Almost yes, but it may sometimes contain Potassium iodate, Sodium iodate or Sodium iodide in place of Potassium iodide
The compound is called Potassium Iodide (-ide.. not -ine).
Yes, in small amounts. Potassium iodide is often added to table salt as a preventative against the disease goiter.
Found in some iodized salt
Acid = Hydroiodic acid Base = Potassium hydroxide (or any Potassium salt of weak acid)
Almost yes, but it may sometimes contain Potassium iodate, Sodium iodate or Sodium iodide in place of Potassium iodide
Iodine is added to salt as potassium (sodium) iodide or potassium (sodium) iodate. An iodine deficiency is a source of thyroide diseases or can lead to idiocy.
potassium iodide
No, KI (potassium iodide) is not a salt. It is a chemical compound that contains the elements potassium and iodine. While it does have an ionic bond, it is more accurately classified as an inorganic compound rather than a salt.
The compound is called Potassium Iodide (-ide.. not -ine).
- potassium iodide is added to table salt as a source of iodine- potassium iodide is a food supplement during a nuclear accident in a nuclear reactor- for the preparation of AgI
Table salt must contain iodine (as potassium iodide or potassium iodate) and an anticaking agent.
Iodized salt contain potassium iodide (KI) or potassium iodate (KIO3).
This element is iodine - added as potassium iodide or potassium iodate.
Yes, in small amounts. Potassium iodide is often added to table salt as a preventative against the disease goiter.
This element is iodine, added as potassium iodide or potassium iodate.
Potassium iodide (KI) and potassium iodate (KIO3) are used.