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CAIE A-Level Chemistry 28.5.1 Stability Constant of a Complex

Practise defining Kstab and interpreting its numerical value as evidence about formation equilibrium and stability.

Syllabus
2028–2030
Course
Chemistry 9701
Level
A2

Exam points

  • define Kstab as the equilibrium constant for forming a complex in a solvent from constituent ions or molecules
  • state that a large Kstab places the formation equilibrium towards the complex and indicates greater stability
  • derive Kstab units from the net powers of mol dm−3 in the numerator and denominator

28.5.1—Stability constant, Kstab, of a complex question 1

[Maximum number: 1]

（f）Table 1.1 shows values for the stability constants，Kstab K_{\text {stab }} ，of some silver（I）complexes．

Table 1.1

Table 1.1

（i）Define the stability constant of a complex．

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