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[Co(NH3)5Cl]SO4 + Ag^+ = _________(a) AgCl(b) BaSO4(c) white precipitate(d) no reactionI got this question during an interview.This intriguing question comes from Isomerism in Coordination Compounds in section Coordination Compounds of Chemistry – Class 12

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Correct ANSWER is (d) no reaction

The best I can explain: The compound [Co(NH3)5Cl]SO4 dissociates into a COBALT complex ion and a sulphate ion when dissolved ion water. The sulphate ion does not react with silver ion. On the other hand, the ionisation isomer of [Co(NH3)5Cl]SO4, that is [Co(NH3)5(SO4)]Cl dissociates into cobalt complex ion and Cl ion which reacts with silver ion to precipitate AgCl.



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