NH3 is a base that ionized to give you NH4+ and OH- (Kb=1.8 x 10-5). You add MgSO4 to the ammonia solution. Calculate the concentration of the Mg2+ion concentration when Mg(OH)2 just begins to precipitate from the 0.10M NH3 solution. The Ksp for Mg(OH)2 is 1.8x10-11.

Nitrogen dioxide decomposes according to the reaction 2 no2(g) ⇌ 2 no(g) + o2(g) where kp = 4.48 × 10−13 at a certain temperature. if 0.70 atm of no2 is added to a container and allowed to come to equilibrium, what are the equilibrium partial pressures of no(g) and o2(g)