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# Ion Concentration

APCHEM-M8JJQU

Consider a saturated solution of barium iodate. Note that the $K_{sp}$ of barium iodate is $4.0 × 10^{-9}$.

What is the iodate ion concentration in this solution?

A

$1.0 × 10 ^{-3}$

B

$2.0 × 10 ^{-3}$

C

$1.0 × 10^{-6}$

D

$2.0 × 10 ^{-9}$