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Answer the following.
A coordination compound precipitates silver chloride when treated with silver nitrate. The molar…
A coordination compound $\text{CoCl}_3\cdot4\text{H}_2\text{O}$ precipitates silver chloride when treated with silver nitrate. The molar conductance of its solution corresponds to a total of two ions. Write the structural formula of the compound and name it.
Answer
Answer
Official answer keyStructural formula: $[\mathrm{Co(H_2O)_4Cl_2}]\mathrm{Cl}$. It precipitates AgCl because one $\mathrm{Cl^-}$ is outside the coordination sphere, and gives two ions ($[\mathrm{Co(H_2O)_4Cl_2}]^+$ and $\mathrm{Cl^-}$) in solution.
IUPAC name: tetraaquadichloridocobalt(III) chloride.
From ISC 2027 Specimen Chemistry Paper 1, question 20(iii).
Check your working with the Coordination complex analyser: hybridisation, shape, magnetic moment, CFSE, isomers and the IUPAC name of a complex.