Ksp of Mg(OH)2 is 4.0 × 10–6. At what minimum pH, Mg2+ ions start precipitating 0.01 MgCl

2+ 2 Mg OH s Mg aq 2OH aq 2 2 2 6 2 4 2 K  =  Mg OH 4 10 0.01 OH OH 4 10 OH 2 10 sp >> x x >> x >> x IONIC EQUILIBRIUM 50 2 pOH log OH pOH log 2 10 pOH 2 log 2 pH 14 pOH pH 14 2 log 2 pH 12 log 2 x >> >>