Barium sulfate:
BaSO4(s) → ← Ba2+(aq) + SO42–(aq)
Ksp = [Ba2+]e[SO42–]e = 1.1×10–10
Initial00
Change+x+x
Equilibriumxx
1.1×10–10 = [x][x] = x2
x = 1.0×10–5
The solubility of barium sulfate = 1.0×10–5 M
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