HBr + H2SO4 = SO2 + Br2 + H2O Did S change oxidation number?

Chemistry

2 answers:

galben [10]3 years ago

7 0

Answer: I think the answer might be yes..

Explanation:

e-lub [12.9K]3 years ago

6 0

Answer:

Yes

Explanation:

The important rules for oxidation numbers are:

The oxidation number of H in a compound is +1.
The oxidation number of O in a compound is usually -2.
The sum of the oxidation numbers in a compound is zero.

Thus, in your reaction, the oxidation numbers for S are:

$\rm HBr + H_{2}\stackrel{\hbox{+6}}{\hbox{S}}O_{4} \longrightarrow \, \stackrel{\hbox{+4}}{\hbox{S}}O_{2} +Br_{2} + H_{2}O\\\text{The oxidation number of S $\large \boxed{\textbf{changes from +6 to +4}}$}$

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