According to Le Chatelier's principle, what happens when the concentration of reactants is doubled in a chemical reaction
that was in equilibrium?
The equilibrium shifts to the right to favor the formation of produinte

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