Home › NEET UG › chemistry › Coordination Compounds › Which of the following is TRUE about a double sa…
Which of the following is TRUE about a double salt vs a complex?
A{'text': 'Both dissociate fully into simple ions in water', 'label': 'A'}
B{'text': 'Both retain their identity in water without dissociation', 'label': 'B'}
C{'text': 'Double salts dissociate fully; complexes retain their coordination sphere in water', 'label': 'C'}
D{'text': 'Complexes dissociate fully; double salts retain their structure in water', 'label': 'D'}
Answer & Solution
Correct answer: C. {'text': 'Double salts dissociate fully; complexes retain their coordination sphere in water', 'label': 'C'}
1. Double salts (Mohr salt, potash alum, carnallite) dissociate completely into their constituent ions.
2. Coordination complexes do not dissociate to release ligands: [Fe(CN)₆]⁴⁻ stays intact in water.
3. So double salts dissociate fully; complexes retain their inner coordination sphere.
4. Conductivity measurements distinguish the two behaviours.
_Source: NCERT Class 12 Chemistry, Unit 5 "Coordination Compounds", §5.1_
Related questions
The correct IUPAC name of [NiCl₂(PPh₃)₂] isThe coordination sphere of K₄[Fe(CN)₆] isThe correct order of ligand denticity, from smallest to largest, isChelate complexes tend to be more stable than similar complexes with unidentate ligands. TThe primary and secondary valences of Co in [Co(NH₃)₆]Cl₃ are respectivelyWhich of the following is a homoleptic complex?Which coordination polyhedron does [Ni(CO)₄] adopt?The IUPAC name of [Ni(NH₃)₆]Cl₂ is