Question

Identify all correct statements about the ionization of water. Dissociation of water produces equal numbers of OH- and H+. Dissociation of water produces equal masses of OH- and H+. Water ionizes to form hydroxide and hydronium ions. Water ionizes to form peroxide and hydronium ions. Dissociation of water is not reversible. Dissociation of water is reversible.

Answer 1

Answer:

Correct statements are: Dissociation of water produces equal numbers of OH- and H+. Water ionizes to form hydroxide and hydronium ions. Dissociation of water is reversible.

Explanation:

(True) Dissociation of water produces equal numbers of OH- and H+.

Water molecules are formed by one ion of OH- and one ion of H+ (which adds up to $H_{2}O$), son when it dissociates (brakes down), for each molecule of water, one ion of OH- and one ion of H+ is obtained.

(False) Dissociation of water produces equal masses of OH- and H+.

One ion of OH- is formed by one atom of oxygen and one atom of hydrogen, which are heavier than the lone atom of hydrogen in the H+ ion, which makes the mass of OH- bigger than the mass of H+ on each water molecule.

(True) Water ionizes to form hydroxide and hydronium ions.

Hydroxide is the name of the OH- ion and hydronium is the name of the H+ ion.

(False) Water ionizes to form peroxide and hydronium ions.

Hydrogen Peroxide formula is H2O2, which is different from water and from water's ions OH- and H+. Hydrogen peroxide is usually obtained from an organic compound called anthraquinone, not from water dissociation.

(False) Dissociation of water is not reversible.

Hydronium and hydroxide ions can be reunited to form water molecules. Actually, in every portion of water there is a very small amount of hydronium and hydroxide ions constantly turning into water and water dissociating itself into hydronium and hydroxide (reversed dissociation), which keeps the water in equilibrium.

(True) Dissociation of water is reversible.

As explained above.