NEET2026ChemistryChapterActual
If the overall stability constant ( ₂ ) for the formation of the [ Ag ( CN )₂ ]^- complex is 5.0 10¹⁸ , determine the overall dissociation equilibrium constant (instability constant) for this complex ion.
Options
- A2.0 10⁻¹⁹
- B5.0 10⁻¹⁹
- C2.0 10¹⁸
- D2.5 10⁻¹⁸
Correct answer
A. 2.0 10⁻¹⁹
Step-by-step solution
The overall dissociation equilibrium constant (instability constant) is the reciprocal of the overall stability constant ( ₂ ). K_d = 1 ₂ Substituting the given value: K_d = 1 5.0 10¹⁸ K_d = 0.2 10⁻¹⁸ K_d = 2.0 10⁻¹⁹ Answer: 2.0 10⁻¹⁹