* Potassium iodide is a salt: It's formed from the ionic bond between a potassium ion (K+) and an iodide ion (I-).
* Acid-base reactions typically produce water and a salt: The salt formed is determined by the specific acid and base used.
Here's how potassium iodide is actually made:
1. Reaction of potassium hydroxide (KOH) with hydrogen iodide (HI): This is a neutralization reaction, where the hydroxide ion (OH-) from KOH reacts with the hydrogen ion (H+) from HI to form water (H2O). The remaining potassium ions (K+) and iodide ions (I-) combine to form potassium iodide (KI).
```
KOH (aq) + HI (aq) -> KI (aq) + H2O (l)
```
2. Reaction of potassium metal with iodine: This is a direct reaction between the elements, where potassium metal reacts with iodine to form potassium iodide.
```
2K (s) + I2 (s) -> 2KI (s)
```
Important Note: While you can theoretically use potassium carbonate (K2CO3) and hydroiodic acid (HI) to make potassium iodide, this reaction is not the most practical or efficient method.
