Final answer:
The solubility product constant (Ksp) for thallium chromate (Tl2CrO4) is calculated using the concentrations of Tl+ and CrO42- in the saturated solution. By inserting these values into the Ksp expression, the result is 8.64×10^-13.
Step-by-step explanation:
To calculate the solubility product constant (Ksp) for thallium chromate (Tl2CrO4), we need to use the concentrations of the ions in the saturated solution and the stoichiometry of the dissolution reaction:
The dissociation of thallium chromate in water can be represented as follows:
Tl2CrO4 (s) → 2Tl+ (aq) + CrO42- (aq)
From the stoichiometry, it is clear that for every 1 mole of Tl2CrO4 that dissolves, it produces 2 moles of Tl+ and 1 mole of CrO42-. Using the concentrations provided ([Tl+] = 1.2×10-4 M and [CrO42-] = 6.0×10-5 M), we can substitute these into the equilibrium expression for Ksp:
Ksp = [Tl+]2 × [CrO42-] = (1.2×10-4 M)2 × (6.0×10-5 M) = 8.64×10-13
Therefore, the Ksp for Tl2CrO4 is 8.64×10-13.