DRAW IT Draw the hydration shells that form around a potassium ion and a chloride ion when potassium chloride (KCl) dissolves in water. Label the positive, negative, and partial charges on the atoms.

Video transcript

Hi everyone. The next question asks which of the following answer choices correctly shows the hydration shell forming around sodium and chloride ions. When sodium chloride N A C. L. Is dissolved in water. So when sodium chloride dissolves, we end up with a positively charged sodium ion and negatively charged chloride ion and hydration gel is just referring the way the polar water molecules surround those ions with their partial negative charge on the oxygen and their partial positive charges on the hydrogen atoms. So let's look at our answer choices. They can look a little overwhelming with these diagrams of the ions surrounded by water molecules, but let's kind of zoom in here on it and look at choice A when we look at these ions, we see negatively charged chloride ion, but the positive ion depicted here on the right is potassium not sodium. So we can eliminate Choice A right away. Now let's look down at Choice B. Here we have the correct ions, A negative chloride, a positive sodium. So let's look at the water molecules and we do see around the negative chloride, we see the hydrogen atoms with a partial positive charge clustered over on the positive sodium ion oriented towards it are the partially negatively charged oxygen atoms. So, Choice B is definitely a correct depiction of these hydration shells. So to be thorough. Well, just look back at choice. See where we see a chloride ion negative here, but the positive ion depicted is a hydrogen ion. So again, can obviously eliminate C. So although this problem maybe looked a little overwhelming at first, it turned out to be a pretty easy one. See you in the next video.