Silver cyanide, AgCN(s), is placed in a solution buffered to pH 9.00 at 25 °C. The solubility product constant is Ksp=2.2×10−16, and the acid-dissociation constant of hydrocyanic acid is Ka=6.2×10−10.
a. Calculate the molar solubility of AgCN in the buffered solution at pH 9.00. Express your answer in mol L−1 with appropriate significant figures.