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Oxidation and Reduction

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  1. Which one among the following equations is correctly balanced ?
    1. NaOH + Al + H2O → 2H2 + NaAlO2
    2. 2NaOH + 2Al + 2H2O → 3H2 + 2NaAlO2
    3. 2NaOH + 2 Al + 3H2O→ 4H2 + 2NaAlO2
    4. 2NaOH + 2Al + H2O → H2 + 2NaAlO2
Correct Option: B

Sodium hydroxide, aluminium and water reacts to from sodium aluminium oxide and hydrogen gas.


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