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A binary of potassium (A) on heating wit...

A binary of potassium (A) on heating with sulphar, compound (B) is formed. (B) on reacting with `BaCI_(2)` gives a white precipitate (C ) which is insoluble in concentrated HCI. Indenfity (A), (B) and (C ).

Text Solution

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`(A)+S overset(Delta)rarr (B)`
`(A)+BaCI_(2)rarr underset("White ppt.")(C )`
(A) is binary salt of potassium. (C ) is white ppt. which is insoluble in conc HCI.
`underset((A))(2KO_(2))+S overset(Delta)rarr underset((B))(K_(2)SO_(4))`
`underset((B))(K_(2)SO_(4)) + BaCI rarr 2KCI+ underset("Whuite ppt.")underset((C ))(BaSO_(4)darr)`
Hence, (A) is `KO_(2)` (potassium peroxide), (B) is `K_(2)SO_(4)` (potassium sulphate) and (C ) is `BaSO_(4)` (barium sulphate).
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