A is a binary compound of a univalent metal. When 1.422 g of A reacts completely with 0.321 g of sulphur in an evacuated and sealed tube, 1.743 g of white crystalline solid B produced, which produces a hydrated double salt C with `Al_(2)(SO_(4))_(3)`. Identfy A, B and C.

Explanation

`(A)=KO_(2), B=K_(2)SO_(4) (C) =K_(2)SO_(4).Al_(2) (SO_(4))_(3).24H_(2)O`