Well, what happens is that it burns and creates a stink
2FeSO4 -> FeS + SO3 + SO4
When ferrous sulphate crystals are heated, they lose water molecules and undergo dehydration, forming a white powder known as anhydrous ferrous sulphate. This process is also known as thermal decomposition.
When ferrous sulphate crystals are heated, they lose water of crystallization and turn into anhydrous ferrous sulphate. The balanced chemical equation for this process is: FeSO4 • 7H2O (s) → FeSO4 (s) + 7H2O (g)
You can obtain the ferric sulphate - Fe2(SO4)3; because the ferrous sulphate react as a reducing agent.
When ferrous sulphate is heated, it undergoes thermal decomposition to form ferric oxide, sulfur dioxide, and sulfur trioxide. The balanced chemical equation for this reaction is: FeSO4 (s) → Fe2O3 (s) + SO2 (g) + SO3 (g)
When copper wire is dipped in ferrous sulfate solution, a displacement reaction occurs where copper displaces iron from ferrous sulfate, forming copper sulfate and iron. As a result, the copper wire will become coated with a reddish-brown deposit of iron.
There would be no reaction because copper is a less reactive metal than iron. Refer to the related link for an activity series of metals.
When ferrous sulfate crystals are heated in a boiling tube with a spirit lamp, they undergo thermal decomposition. The crystals lose water of crystallization and change color from green to white as they form anhydrous ferrous sulfate. This reaction releases water vapor and sulfur dioxide gas.
When ferrous sulfate reacts with sodium hydroxide, a precipitate of ferrous hydroxide is formed. The balanced chemical equation for the reaction is FeSO4 + 2NaOH → Fe(OH)2 + Na2SO4. This reaction is a double displacement reaction where the cations and anions switch partners.
When ferrous sulfate is heated strongly, it undergoes thermal decomposition, breaking down into iron oxide, sulfur dioxide, and sulfur trioxide. This reaction is characterized by a color change from green to reddish-brown due to the formation of iron oxide.
iron sulphate will be created
You get an exothermic reaction which produces potassium sulphate and water.