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a binary salt potassium (A) on heating with sulphur gives a compund (B). (B) on reacting with bacl2 produces white percipitate which is insoluble in conc.hcl indentifu A B C

a binary salt potassium (A) on heating with sulphur gives a compund  (B). (B) on reacting with bacl2 produces white percipitate which is insoluble in conc.hcl 
indentifu A B C

Grade:11

1 Answers

Rajdeep
231 Points
5 years ago
HELLO THERE!
Here’s your answer:
 
First, understand the concept.
 
When Barium Chloride (a popular reagent) is treated with any sulphate solution, we get a white precipitate of Barium Chloride, which is insoluble in mineral acids like Concentrated HCl.
 
Hence, when BaCl2 is treated with (B), and a white precipitate (C) is produced which is insoluble in mineral acids, we can easily conclude that (C) is BaSO4. And, since a binary salt of Potassium reacts with sulphur, the sulphate salt that reacts with BaCl2 is Potassium Sulphate (B).
 
Also, we know that Potassium superoxide + Sulphur gives Potassium Sulphate:
2KO2 + S ------> K2SO4.
 
So, (A) is KO2.
 
 
TO SUM UP:
A = KO2
B = K2SO4
C = BaSO4
 
THANKS!

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