In H2SO4, the oxidation state of sulfur is +6.Here's how to determine it:1. Hydrogen has an oxidation state of +1.2. Oxygen has an oxidation state of -2.3. The overall charge of the molecule is 0.Using these rules, we can set up an equation:2 +1 + x + 4 -2 = 0Where x is the oxidation state of sulfur. Solving for x:2 + x - 8 = 0x - 6 = 0x = +6So, the oxidation state of sulfur in H2SO4 is +6.