. In the electrolysis of molten potassium iodide , a possible cathode reaction would be : * a.2I⁻ -2e→I₂ b. I₂-2e→2I⁻ c. K⁺+e→K 4.K-e→K⁺

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answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

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