Q18Multiple correct
An aqueous pink solution of cobalt(II) chloride changes to deep blue on addition of excess of HCl. This is because____________.
- (i)[Co(H2O)6]2+ is transformed into [CoCl6]4– 2+ 2–
- (ii)[Co(H2O)6] is transformed into [CoCl4]
- (iii)tetrahedral complexes have smaller crystal field splitting than octahedral complexes.
- (iv)tetrahedral complexes have larger crystal field splitting than octahedral complex.
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(ii) [Co(H2O)6] is transformed into [CoCl4]
(iii) tetrahedral complexes have smaller crystal field splitting than octahedral complexes.