Question

HBr + H₂SO₄ SO₂ + Br₂ + H₂O Did H change oxidation number?

Answer 1

No. Oxidation number is still I

Answer 2

Answer: No, the oxidation state of hydrogen does not change in the given chemical reaction.

Explanation: Balancing the given chemical equation, we get:

`2HBr+H_2SO_4\rightarrow SO_2+Br_2+2H_2O`

Reactant side:

In HBr, the oxidation state of bromine is -1, so to form a neutral compound, hydrogen should have an oxidation state of +1.

In
`H_2SO_4` , the oxidation state of sulfate is -2, so to form a neutral atom, two hydrogen atoms having +1 oxidation state should combine with it.

Product side:

In
`H_2O`, the oxidation state of hydroxide ion is -1, so to form a neutral water molecule, hydrogen should have an oxidation state of +1.

From above, we can say that the oxidation states of hydrogen atom did not change for the following chemical reaction.