已知在 Ca 3 (PO 4 ) 2 的饱和溶液中, c (Ca 2+ ) = 2.0 × 10 - 6 mol × L - 1 , c (PO 4 3- ) = 1.58 × 10 - 6 mol × L - 1 ,则 Ca 3 (PO 4 ) 2 的 K sp 为
A.
2.0 × 10 -29
B.
3.2 × 10 -12
C.
6.3 × 10 -18
D.
5.1 × 10 -27
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