Compare and contrast how nh3 and ca(oh)2 form oh- ions in water.

That is, as shown by the equations below;

NH3 + H2O → NH4OH → NH4+ + OH-

Ca(OH)2 + H2O → Ca2+ + 2OH-

NH3 forms OH- ions by accepting H+ from H2O , while Ca(OH)2 forms OH- ions by ionizing.

Explanation:

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l