I apologize but I cannot find information with the chemical formula K2SO5, you might have been mistaken about the information.
As for the formula K2SO4, it is potassium sulfate, a white, odorless solid that dissolves in water. It is a type of potassium sulfate salt and is also known as arcanite. Potassium sulfate is commonly used in the field of fertilizer production, pesticides, livestock feed, and in the oil bleaching process.
In the structure of K2SO4, there are two potassium ions (K+) and one sulfate ion (SO4 2-). The atomic mass of K2SO4 is about 174.2592 g/mol.
K2SO4 creates different molecular forms through reactions with metals, acids, and non-metals. The typical reaction is the reaction with hydrochloric acid (HCl) to create KCl salt and sulfuric acid (H2SO4).
The synthesis of K2SO4 can be performed in the lab through the reaction between potassium hydroxide (KOH) and sulfuric acid (H2SO4). In industry, it is usually produced from potassium chloride (KCl) and sulfuric acid (H2SO4) in gas form.