One of relatively few reactions that takes place directly between two solids at room temperature is
Ba(OH)2 • 8H2O(s) + NH4SCN(s) → Ba(SCN)2(s) + H2O(l) + NH3(g)
In this equation, the • 8H2O in Ba(OH) 2 • 8H2O indicates the presence of eight water molecules. This compound is called barium hydroxide octahydrate.
a. Balance the equation.