Refer to the figure to answer questions 4 and 5. The images are a molecular representation of three different substances, AX3, AY3, and AZ3, dissolved in water. (Water molecules are omitted for clarity.)

Which of the substances is the weakest electrolyte? (LO 4.6) (a) AX3 (b) AY3 (c) AZ3 (d) All of the substances are strong electrolytes.

Video transcript

Hey everyone. The pictures show three different substances A. Two X. B. Two X. And C. Two X. Dissolved in water at the molecular level. Water molecules have been left out. For simplicity which substance is the weakest electrolyte First, let's think about what we know about weak electrolytes. So the weakest electrolyte will be leased to mine eyes. So that means it will produce the least amount of ions. Looking at our three pictures, we can see that our first picture A. Two X. Has the least amount of ions. Here we have only three ions Looking at B. two X. We can see that this is completely ionized. And lastly looking at C. Two X. We see that at least half is ionized. Looking at C. Two X. We see that we have about six ions, so about half is ionized. And since we're looking for the weakest electrolyte, it looks like A two X. Is going to be our answer. Since we have the least amount of ions produced in A two X. Now, I hope that made sense. And let us know if you have any questions