The solubility of salt AX ₂ is 6 10⁻¹² mol dm ⁻³ . What is solubility product of the salt ?

Step-by-step solution

The dissociation of the salt AX ₂ is given by: AX ₂ A ²⁺ + 2 X ^- Let the solubility of the salt be s . [ A ²⁺] = s [ X ^-] = 2s The solubility product K_ sp is: K_ sp = [ A ²⁺][ X ^-]^2 = (s)(2s)^2 = 4s^3 Given s = 6 10⁻¹² mol dm ⁻³ , substituting this value: K_ sp = 4 (6 10⁻¹²)^3 K_ sp = 4 216 10⁻³⁶ K_ sp = 864 10⁻³⁶ = 8.64 10⁻³⁴ Answer: 8.64 10⁻³⁴