How many moles of NaOH are contained in 27 mL of 0.15 M NaOH? (Atomic mass: Na=23 u , O =16 u , H =1 u) *

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