Use the chemical equation below to complete the activity.
A student makes the following statements:
Statement 1) Hydrogen always has the same oxidation number, so it has an
oxidation number of +1 in both the reactant H2 and product HBr.
Statement 2) Bromine is in Group VIIA, so it has an oxidation number of -1 in both
the reactant Br2 and product HBr.
Statement 3) Neither hydrogen nor bromine changes oxidation states, so the
reaction is not a redox reaction.
Evaluate each statement for accuracy and describe the mistakes that the student
made, then you determine whether or not the reaction is a redox reaction. Explain
your answer; if redox then why and if not redox, then why not.
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H₂(g) + Br₂ (g) → 2HBr (g)
