There isn't a single "chemical equation for potassium". You need more information to write a specific equation. Here's why:

* Potassium is an element: It exists as a pure substance, represented by the symbol "K".

* Chemical equations describe reactions: To write a chemical equation, you need to describe a chemical reaction that potassium is involved in.

Here are some examples of chemical equations involving potassium:

* Reaction with water:

2K(s) + 2H₂O(l) → 2KOH(aq) + H₂(g)

This shows potassium reacting with water to form potassium hydroxide and hydrogen gas.

* Reaction with chlorine:

2K(s) + Cl₂(g) → 2KCl(s)

This shows potassium reacting with chlorine gas to form potassium chloride.

* Combustion:

4K(s) + O₂(g) → 2K₂O(s)

This shows potassium reacting with oxygen to form potassium oxide.

To help you get the specific equation you need, please tell me:

* What is potassium reacting with? (e.g., water, chlorine, oxygen, etc.)

* What are the products of the reaction?

Once you provide these details, I can write the correct chemical equation for you.