# What molarity of oxalate ion, C2042-, is necessary to precipitate CaC204 from asaturated solution of CaSO4?Ksp for CaSO4 = 2.4 x 10-5; Ksp for CaC204 = 1.3 x 10-9).%3D

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Step 1

Given information:

Ksp for CaSO4 = 2.4×10-5

Ksp for CaC2O4 = 1.3×10-9

Step 2

The solubility product constant (Ksp) represents the solubility of products at equilibrium for solids in an aqueous solution.

Thus, the solubility product for ionization of CaSO4 and CaC2O4 will be represented as follows:

Step 3

Since, 1 mol of CaSO4 gives 1 mol of each Ca2+ and SO42- thus, concentration of [Ca2+] = [SO42-].

Assuming the concentration of Ca2+ ion as s.

Thus, the concentration of Ca2+ ion can be calculated as follows:

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