A) Give the formula of each of the following compounds and identify the oxidation number of the sulphur in that compound. 1. Sulphuric acid

a) Give the formula of each of the following compounds and identify the oxidation number of the sulphur in that compound.

1. Sulphuric acid
   • Formula: $\text{H}_2\text{SO}_4$
   • Oxidation number of S: Let $x$ be the oxidation number of S. $2(+1) + x + 4(-2) = 0$ $2 + x - 8 = 0$ $x - 6 = 0$ $x = +6$
   • Oxidation number: $\boxed