Final answer:
The complete ionic formula for potassium sulfate is K2SO4, which consists of two potassium ions (K+) and one sulfate ion (SO42-).
Step-by-step explanation:
The complete ionic formula for potassium sulfate is K2SO4. In ionic terms, the compound is composed of two potassium ions (K+) and one sulfate ion (SO42-). When potassium sulfate dissolves in water, it dissociates into its constituent ions, resulting in the balanced ionic equation:
K2SO4(s) → 2K+(aq) + SO42-(aq)
This demonstrates that for every one mole of potassium sulfate, two moles of potassium ions and one mole of sulfate ions are produced in solution.