When ion is treated with KI, a white precipitate, X appears in solution. The solution is titrated with sodium thiosulphate, the compound Y is formed. X and Y respectively are

Question

When  ion is treated with KI, a white precipitate, X appears in solution. The solution is titrated with sodium thiosulphate, the compound Y is formed. X and Y respectively are

Canvas Classes · Accepted Answer

Step 1:  + KI:

X =  (cuprous iodide, white precipitate) ✓

is also produced in solution.

Step 2: Titration of  with sodium thiosulphate:

Y =  (sodium tetrathionate) ✓

Answer: Option (2) — ,

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