Pure water is a poor conductor of electricity. when sodium chloride (nacl) is dissolved in water, however, the solution becomes a good conductor of electricity. which of the following statements explains this change in conductivity?
a. the nacl dissociates into na+ and cl- ions, which are able to carry the charge. b. the nacl breaks down the water molecules creating charged oxygen and hydrogen ions.
c. the nacl molecule changes and becomes a covalent bond when dissolved in water.
d. the nacl reacts with water to form the electrically charged compounds hcl and na2o.