On addition of a solution of AgNO₃ to a solution of Na₂ S₂ O₃, it turns black on standing due to the… · ABC26IN0667

Subject: Inorganic Chemistry · Chapter: d-Block Elements · Topic: D Block – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Medium

On addition of a solution of $\mathrm{AgNO}_{3}$ to a solution of $\mathrm{Na}_{2} \mathrm{S}_{2} \mathrm{O}_{3}$, it turns black on standing due to the formation of:
(a)Ag
(b)$\mathrm{Ag}_{2} \mathrm{S}$
(d)$\mathrm{Ag}_{2} \mathrm{SO}_{4}$
(c)$\mathrm{Ag}_{2} \mathrm{S}_{2} \mathrm{O}_{2}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Silver thiosulfate decomposes on standing to black Ag₂S (b).

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