With ammonical cuprous chloride solution, a reddish brown precipitate is obtained on treating with

With ammoniacal cuprous solution a reddish brown precipitate is obtained on treating with

Reddish brown (chocolate) precipitated is formed with

Ferric chloride solution on standing gives a brown precipitate. Why?

(A) : Acetylene reacts with ammonical cuprous chloride to form red precipitate (R ) : Hydrogen atom bonded to sp hybridised carbon atom is acidic in nature.

Ammonium hydroxide will produce a reddish brown precipitate when added to a solution of :

When H_(2)S is passed through an ammonical salt solution X, a white precipitate is obtained. Then X can be a-