Solid `Ba(NO_(3))` is gradually dissolved in a `1.0xx10^(-4) M Na_(2)CO_(3)` solution. At what concentrations of `Ba^(2+)`, will a precipitate begin to form?
(`K_(SP)` for `BaCO_(3)=5.1xx10^(-9)`)

Options

A. `5.1xx10^(-5)`
B. `8.1xx10^(-8)`
C. `8.1xx10^(-7)`
D. `4.1xx10^(-5)`

Answer

A

Explanation

`N//A`