One end of a copper rod is placed in a flame of a Bunsen a burner. Small pieces of wax placed along the rod melt at progressively larger distance from the flame. Heat is transferred through
the rod by

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

the objects have the same charge.