In the reaction Ga(l) + Br2(l) → GaBr3(s), which species acts as the oxidizing agent?

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Multiple Choice

In the reaction Ga(l) + Br2(l) → GaBr3(s), which species acts as the oxidizing agent?

Explanation:
In redox chemistry, the oxidizing agent is the species that gains electrons. Here, gallium starts as Ga(0) and ends up as Ga(III) in GaBr3, meaning Ga loses electrons and is oxidized. The bromine molecule starts as Br2(0) and ends up as bromide with bromine in the -1 state in GaBr3, so Br2 gains electrons and is reduced. Because the substance that is reduced is the one that drives the oxidation of the other, Br2(l) acts as the oxidizing agent.

In redox chemistry, the oxidizing agent is the species that gains electrons. Here, gallium starts as Ga(0) and ends up as Ga(III) in GaBr3, meaning Ga loses electrons and is oxidized. The bromine molecule starts as Br2(0) and ends up as bromide with bromine in the -1 state in GaBr3, so Br2 gains electrons and is reduced. Because the substance that is reduced is the one that drives the oxidation of the other, Br2(l) acts as the oxidizing agent.

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