Chemical formulae of tetraoxosulphate(4)acid

Answer 1

The correct name for H2SO4 is sulfuric acid. The 4 is incorrect also in your naming scheme. The correct oxidation number for S in H2SO4 is 6+. If you are trying to name sulfurous acid, that does have S with an oxidation number of 4+ and the formula for that is H2SO3.

Answer 2

Tetraoxosulphate(VI) Acid - H2SO4

Answer 3

The VI part is correct but the name tetraoxosulfate(VI) acid is NOT a correct name. One of the IUPAC names is sulfuric acid. That is the most common. There are other correct names that are accepted by IUPAC but tetraoxosulfate(VI) acid is NOT one of them. In my opinion the STOCK system adopted by the IUPAC has set nomenclature back a hundred years. 30 years ago almost no one knew what the Stock system was. Now students gravitate to that system, especially when they can't remember the common name like sulfuric acid, but they don't get it right.

Answer 4

My question is
Is h2so4
Tetraoxosulphate (iv) acid or tetraoxosulphate (vi) acid
Which of the Roman numeral is correct cus I see both

Answer 5

Tetraoxosulphate(vi)acid