Question

Solubility product of CaC₂O₄ at a given temperature in pure water is 4 × 10⁻⁹ mol²/L². Solubility of CaC₂O₄ at the same temperature is:

• A. 6.3×10−5mol/L
• B. 2×10−5mol/L
• C. 2×10−4mol/L
• D. 6.3×10−4mol/L

Hint:

The solubility product (Ksp) of CaC₂O₄ helps determine its solubility ().

Answer 1

The Correct Option is A

The dissociation of CaC₂O₄ in water results in the solubility product Ksp​=S2=4×10−9. Solving for S, S=6.3×10−5mol/L.