Questions: What is the oxidation number of bromine as a reactant and in the product?
Transcript text: What is the oxidation number of bromine as a reactant and in the product?
Solution
Solution Steps
Step 1: Determine the oxidation number of bromine in Br\(_2\)
In diatomic molecules like Br\(_2\), each bromine atom has an oxidation number of 0 because they are in their elemental form.
Step 2: Determine the oxidation number of bromine in Al\(_2\)Br\(_6\)
In the compound Al\(_2\)Br\(_6\), aluminum typically has an oxidation number of +3. To find the oxidation number of bromine, we set up the following equation based on the sum of oxidation numbers in a neutral compound being zero:
\[
2(\text{oxidation number of Al}) + 6(\text{oxidation number of Br}) = 0
\]
Substituting the known oxidation number of aluminum:
\[
2(+3) + 6(\text{oxidation number of Br}) = 0
\]
Solving for the oxidation number of bromine:
\[
6(\text{oxidation number of Br}) = -6
\]
\[
\text{oxidation number of Br} = -1
\]
Final Answer
The oxidation number of bromine as a reactant in Br\(_2\) is \(\boxed{0}\).
The oxidation number of bromine in the product Al\(_2\)Br\(_6\) is \(\boxed{-1}\).