AL Chem-Chemical equilbria既計數問題
When excess solid Mg(OH)2 is shaken with 1.00 dm3of 1.00M NH4Cl solution,the resulting saturated solution has a pH of9.0 at 298K.
equation:Mg(OH)2 + 2NH4+ --->Mg2+ + 2NH3 + 2 H2O
Given that Kb for ammonia is 1.8*10^-5 mol dm-3 at 298K,calculate the concentration of NH3 and the NH4+ ion