Identify the oxidant and the reductant in the following reaction respectively: AlCl3+3K→Al+3KCl
A
K and AlCl3
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B
AlCl3 and K
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C
Al and KCl
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D
KCl and Al
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Solution
The correct option is BAlCl3 and K The given redox reaction is AlCl3+3K→Al+3KCl
A species which loses electron in a redox reaction is called as reducing agent/reductant. 3K→3K++3e− (Oxidation).
Here K is losing reagent so it is a reductant.
A species which gains electron in a redox reaction is called as oxidising agent/oxidant. 3e−+Al3+→Al (Reduction).
Here Al is gaining reagent so it is an oxidant.