The oxidation potential of Mg and Al are +2.37 and +1.66 volt respectively.

The Mg in chemical reaction -

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  1. will replace Al
  2. will be replaced by Al
  3. will not be able to replace Al
  4. None of these

Answer (Detailed Solution Below)

Option 1 : will replace Al
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Detailed Solution

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CONCEPT:

Oxidation Potential and Reactivity

  • Oxidation potential indicates how easily an element can lose electrons (undergo oxidation). A higher oxidation potential means a stronger tendency to lose electrons and act as a reducing agent.
  • In displacement reactions, a more reactive metal (with higher oxidation potential) can displace a less reactive metal from its compound.

EXPLANATION:

  • The oxidation potential of Mg is +2.37 V, which is higher than that of Al (+1.66 V).
  • Because Mg has a higher oxidation potential, it is more likely to lose electrons and undergo oxidation compared to Al.
  • As a result, Mg can replace Al in a chemical reaction, indicating that Mg is more reactive.

The correct answer is (1) will replace Al.

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