Question

1. potassium iodide is a salt used in some medicines. its chemical formula is ki. based on the text, which of these images represents what happens to potassium iodide in water?

Explanation:

Step1: Analyze potassium iodide dissociation

Potassium iodide (KI) is an ionic compound. In water, it dissociates into \(K^{+}\) (represented by yellow spheres) and \(I^{-}\) (represented by purple spheres).

Step2: Evaluate each option

• Option A: Shows \(KI\) molecules (not dissociated), which is incorrect.
• Option B: Only one type of ion (yellow spheres), which is incorrect as two types of ions (\(K^{+}\) and \(I^{-}\)) should be present.
• Option C: Shows \(KI\) clusters (not fully dissociated), which is incorrect.
• Option D: Shows separate \(K^{+}\) (yellow) and \(I^{-}\) (purple) ions evenly distributed in water, which is correct as it represents dissociation.

Answer:

D