RachelSpillane RachelSpillane

23-08-2019
Chemistry

contestada

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.

Respuesta :

chloepenney chloepenney

23-08-2019

Answer:

A. The NaCl dissociates into Na+ and Cl- ions, which are able to carry the charge.

Explanation:

This is because when dissolved in water (in aqueous form) ions can move freely and thus they can conduct electricity well. Water by itself is a poor conductor of electricity because it is neutral and therefore does not have the negative and positive charged required to conduct electricity.

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jazz7078 jazz7078

24-08-2019

The correct answer is A hope this helps :)

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