Molecule-ion attraction are found in NaCl (aq) CO2 (g) KBr (1) Cu (S)​

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

answerlinnaeus;