Ferric iodide is very unstable but ferric chloride is not

Pure HI kept in a bottle axquires a brown colour after sometime. Why? (b) Ferric ioddic is very unstable but ferric chloride is stable. Why? (c ) KHF_(2) is well known but KHCl_(2) and KHBr_(2) do not exist. Why?

Anhydrous ferric chloride is prepared by:

The colour of precipitate obtained when ammonium hydroxide is added to ferric chloride is ……………………

State one observation for each of the following: Sodium hydroxide solution is added to ferric chloride solution first drop by drop and then in excess.

State what would you observe when : The salt ferric chloride is exposed to the atmosphere.

State one observation for each of the following: Sodium hydroxide solution is added to ferric chloride solution at first a little and then in excess.

Statement-1:Finely divided iron does not form ferric chloride with hydrochloric acid. Statement-2:Hydrochloric acid produces hydrogen gas with iron.

An organic compound neither reacts with neutral ferric chloride solution nor with Fehling solution. It however, reacts with Grignard reagent and gives positive iodoform test. The compound is

An organic compound neither reacts with neutral ferric chloride solution nor with Fehling solution. It however, reacts with Grignard reagent and gives positive iodoform test. The compound is

The reaction of toluene with chlorine in the presence of ferric chloride gives mainly