the simple answer is itshouldn't be the iodine produced should give rise to a light purple to begin with provide it is dissolve in water, if in an inorganic solvent it may well be dependant on the solvent.
however my guess is the potassium iodine is dissolved in water and than has become contaminated with something like lead giving rise to lead iodide (yellow solid that participates out if memory serves this being the case you will have a gas given off at the negative electrode (anode) this will be hydrogen and a mix of purple and yellow solid at the positive electrode (cathode)
182.88
Literally, the correct formula for potassium and iodine at standard temperature and pressure would be " K and I2". The formula for the compound formed between potassium and iodine, however, is KI.
this is because iodine is not soluble in water and it is soluble in potassiuim iodide. so KI is used as a solvent, and the resulting potassium iodate is soluble in watre so we can determine iodine in the ticture.
The role of KI in the preparation of strong iodine solution is to enhance the solubility of iodine crystals in water. Iodine is generally not soluble in water. The KI is added to help the iodine to be dissolved. -College Chemistry professor
2grm iodine and 4grm KI add to 1000ml of water
182.88
The chemical formula for potassium iodine is KI
Literally, the correct formula for potassium and iodine at standard temperature and pressure would be " K and I2". The formula for the compound formed between potassium and iodine, however, is KI.
Iodine is in: Iodomethane (CH3I) that is produced by the marine environment, by microbial activity in rice paddies and in Potassium iodide (KI) a very soluble salt.
KI
See: http://www.elmhurst.edu/~chm/vchembook/548starchiodine.html For demonstrating starch the concentrations are not essential. Dissolve so much I2 in a KI solution until you get a yellow-brownish colour.
KI
potassium and iodine
this is because iodine is not soluble in water and it is soluble in potassiuim iodide. so KI is used as a solvent, and the resulting potassium iodate is soluble in watre so we can determine iodine in the ticture.
Iodine potassium iodide (I2KI)
The role of KI in the preparation of strong iodine solution is to enhance the solubility of iodine crystals in water. Iodine is generally not soluble in water. The KI is added to help the iodine to be dissolved. -College Chemistry professor
2grm iodine and 4grm KI add to 1000ml of water