Which statement about the self-ionization of water is correct? two water molecules interact to form a water molecule and a hydroxide ion. two water molecules interact to form a hydronium ion and a hydroxide ion. two water molecules interact to form two hydronium ions. two water molecules interact to form two hydroxide ions.

Considering, the reaction when two molecules of water combine they give hydronium ion and a hydroxide ion.

The molecule of water breaks and forms a hydronium ion along with a hydroxide ion.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.