A black salt that react with conc. Hcl to give cl2

1.	A black salt that react with conc. Hcl to give cl2
Answer» Answer: SALT R is black in colour. On reacting with CONC. HCl, it liberates a PUNGENT GREENISH yellow gas which turns moist starch iodide PAPER blue black.

Answer»

Answer:

SALT R is black in colour. On reacting with CONC. HCl, it liberates a PUNGENT GREENISH yellow gas which turns moist starch iodide PAPER blue black.

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