Answer:
![4K+O_2\operatorname{\rightarrow}2K_2O]()
Explanations:
Synthesis reaction occur when two or more different molecule combine to form a difference molecule.
For synthesis of potassium oxide, we need to find the equation such that if two elements combine, they will form potassium oxide.
Potassium = K
Oxygen = O2
The synthesis reaction will be:
![4K+O_2\rightarrow2K_2O](https://img.qammunity.org/2023/formulas/chemistry/college/ybk6bl8k7tf8zyxxdf18v2f63oor2ujdq9.png)
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