When an ionic compound dissolves in water:
a. the positive end of water dipoles attract the negative ions.
b. the solvent-solute attractive forces overcome the solute-solute attractions.
c. the negative end of water dipoles attract the positive ions.
d. each of the above (a, b, and c) occurs.
e. none of the above (a, b, or c) occurs.

d. each of the above (A, B, and C) occurs.

Explanation:

When an ionic species dissolves in water , the ionic compound dissociates into cation and anion , and the cation interacts with the negative end of the water molecules , and the anion interacts with the positive end of the water molecule .

During the process of dissolution , the interaction between , solvent - solute overcome the interaction between solute - solute molecules .

Hence , From the question , all the statement given are correct .

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