Cyanide ion, CN-, is important in metal plating industries because it can keep metals dissolved under conditions where they would otherwise form solids (precipitate) and settle out of solution. The details of how this occurs are presented in Chapter 11. It is important to maintain pH > 10.5 in these solutions to minimize release of toxic hydrogen cyanide gas. If a solution is prepared by dissolving 10-2MNaCN in water, will the pH be in the region where the solution is safe? What is the HCN concentration in the solution?