Question

In what state is iron II Tetra OXO sulphate six heptahydrate if heated to110 degree centigrade

Answer 1

You post is garbled. I have no idea what you mean.

Answer 2

Heating Iron(II)Sulfate Heptahydrate (Cuprian Melanterite)* to 110⁰C will only decompose the hydrate into the anhydrate crystalline solid Iron(II) Sulfate and water vapor. Decomposition of the FeSO₄(s) occurs ~680⁰C into Iron(III) Oxide and a mix of SO₂(g) and SO₃(g).

FeSO₄∙7H₂O(s) + Δ(110⁰C) => FeSO₂(s) + 7H₂O(g)
FeSO₂(s) + Δ(680⁰C) => Fe₂O₃(s) + SO₂(g) + SO(g)
………………………………………………………………………………
* h ttps://en.wikipedia.org/wiki/Melanterite