You dissociate NiCO3 in pure water. You know the molar solubility is 3.4 x 10⁻4 M in pure H2O. What is the Ksp for this compound in pure water?
a) 1.15 x 10⁻¹³
b) 1.16 x 10⁻⁷
c) 1.15 x 10⁻⁸
d) 1.16 x 10⁻¹³