Skip to content
Question 66 of 67

Q.Give the differences between double salts and coordination compounds.

Puducherry TnboardTamil Nadu HSC (DGE) Board 2026Subjective· 2mImportance★★★★★
99% · 66/67 Questions
🔒 Locked · start free trial →

You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.

Start your 14-day free trial to unlock the full solution →

Double salts fall apart into their component simple ions the instant they dissolve in water, behaving like a mixture of two separate salts, whereas coordination compounds keep their complex ion intact in solution, giving it a distinct chemical identity of its own.

FeatureDouble saltCoordination compound
ExistenceDistinct compound only in the solid (crystalline) stateRetains its identity both in the solid state and in solution
Behaviour in solutionDissociates completely into its simple constituent ionsThe complex ion does not dissociate into simple ions
Properties in solutionShows the properties of all its simple constituent ions (behaves like a mixture of the individual salts)Shows properties characteristic of the complex ion itself, very different from the simple constituent ions
ExamplesPotash alum, K2SO4⋅Al2(SO4)3⋅24H2OK_2SO_4\cdot Al_2(SO_4)_3\cdot24H_2O (gives K+K^+, Al3+Al^{3+}, SO42−SO_4^{2-} in solution); Mohr's salt, FeSO4⋅(NH4)2SO4⋅6H2OFeSO_4\cdot(NH_4)_2SO_4\cdot6H_2OK4[Fe(CN)6]K_4[Fe(CN)_6] (gives K+K^+ and the intact complex ion [Fe(CN)6]4−[Fe(CN)_6]^{4-} — NOT free Fe2+Fe^{2+} or CN−CN^- ions)
…

Unlock everything free for 14 days

  • Full step-by-step solutions
  • Concept-first explanations
  • Methods, shortcuts & mistakes
  • PYQ mapping + timed mock tests

Full access for 14 days. No credit card required.