A green substance KK
on heating gave off gas BB
which turns lime water milky and a black residue CC
was formed. When a black residue CC
was dissolved in dilute Dulphuric acid, blue solution DD
was formed. When a pen-knife blade was dipped into the blue solution DD
, a reddish brown coat was deposited on the pen-knife blade.
(a) identify substances KK, BB, CC ans DD
(b) write balanced chemical equation for each step outlined above
(c). what would be observed when sodium hydroxide solution is added in small amount till in excess in a test tube containing little amount of substance KK?
(i shall be grateful for you assistance.. am eagerly waiting for your responces) With regards