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Werner's theory
Appears in
Concepts tested here
- Ionisable chloride 2
All Questions
2015 AIPMT-I 1 question
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Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at $25^\circ C$?$CoCl_3\cdot 3NH_3$ is $[Co(NH_3)_3Cl_3]$: all three chlorides are coordinated inside the sphere.
No chloride ion is ionisable, so $[Co(NH_3)_3Cl_3] \xrightarrow{AgNO_3}$ no precipitate.
2013 NEET 1 question
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An excess of $AgNO_3$ is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium(III) chloride. The number of moles of AgCl precipitated would be:The complex is $[Cr(H_2O)_4Cl_2]Cl$, which has one ionisable chloride ion per formula unit.
Moles of complex $= 0.1\ L\times0.01\ M = 0.001$ mol
So 0.001 mol of AgCl is precipitated.