An inorganiccompound[A] yellowish greenin colour loses its water of crystallisation upon heating . When heatedfurthr, it changesto blackish brown powder [B] and alsogives two oxides of sulphure. The power [B] on boilingwithhydrochloric acidgiven a yellowish solution which gives a bloodred colouration on reacting with potassiumthiocyanate. Theyellowishgreen compound [A] is

An inorganiccompound[A] yellowish greenin colour loses its water of cr

1.	An inorganiccompound[A] yellowish greenin colour loses its water of crystallisation upon heating . When heatedfurthr, it changesto blackish brown powder [B] and alsogives two oxides of sulphure. The power [B] on boilingwithhydrochloric acidgiven a yellowish solution which gives a bloodred colouration on reacting with potassiumthiocyanate. Theyellowishgreen compound [A] is
Answer» `CuSO_(4). 5H_(2)O` `FeSO_(4).7H_(2)O` `FeSO_(4).(NH_(4)) SO_(4). 6H_(2)O` `Fe_(2)(SO_(4))_(3).7H_(2)O` Solution :(b) The compound [A] is sulphate of some metal as it give two OXIDES of sulphur `(SO_(2)" and "SO_(3))` on HEATING. Its yellowish green colour suggests that (A) if `FeSO_(4).7H_(2)O` (green vitriol).