A solution of Na2CO3 is added dropwise to a solution that contains 1.14×10−2mol L−1 Fe^2+ and...

A solution of Na2CO3 is added dropwise to a solution that contains 1.14×10−2mol L−1 Fe^2+ and 1.54×10−2mol L−1 Cd2+. What concentration of CO3^2− is need to initiate precipitation? Neglect any volume changes during the addition.

The solubility-product constant, Ksp, at 25 ∘C for two compounds [iron(II) carbonate, FeCO3, and cadmium(II) carbonate, CdCO3] are given by the table

Substance	KspKsp
FeCO3	2.10×10^−11
CdCO3	1.80×10^−14

Expert Solution

Hii,

Please find the detailed explaination below.

EXPLAINATION :

NOTE: Qsp > Ksp, Hence precipitation occours first in cadmium carbonate.

Hope, This helps you alot for your better understanding.

Thanks

?—BEST OF LUCK—?

queen_honey_blossom answered 2 years ago

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