An aqueous pink solution of cobalt(II) chloride to deep blue on addition of excess of HCL. This is because .......... (a) [Co(H2O)6]2+ is transformed into [CoCl6]4− (b) [Co(H2O)6]2+ is transformed into [CoCl4]2− (c) tetrahedral complexes have smaller crystal field splitting than octahedral complexes (d) tetrahedral complexes have larger crystal field splitting than octahedral complex.

An aqueous pink solution of cobalt(II) chloride to deep blue on additi

1.	An aqueous pink solution of cobalt(II) chloride to deep blue on addition of excess of HCL. This is because .......... (a) [Co(H2O)6]2+ is transformed into [CoCl6]4− (b) [Co(H2O)6]2+ is transformed into [CoCl4]2− (c) tetrahedral complexes have smaller crystal field splitting than octahedral complexes (d) tetrahedral complexes have larger crystal field splitting than octahedral complex.
Answer» An aqueous pink solution of cobalt(II) chloride to deep blue on addition of excess of HCL. This is because .......... (a) $[C o (H_{2} O)_{6}]^{2 +}$ is transformed into $[C o C l_{6}]^{4 -}$ (b) $[C o (H_{2} O)_{6}]^{2 +}$ is transformed into $[C o C l_{4}]^{2 -}$ (c) tetrahedral complexes have smaller crystal field splitting than octahedral complexes (d) tetrahedral complexes have larger crystal field splitting than octahedral complex.