Question

When 2 mL of sodium hydroxide solution is added to few pieces of granulated zinc in a test tube and then warmed, the reaction that occurs can be written in the form of a balanced chemical equation as:

Options

• \[\ce{NaOH + Zn -> NaZnO2 + H2O}\]

• \[\ce{2NaOH + Zn -> Na2ZnO2 + H2}\]

• \[\ce{2NaOH + Zn -> NaZnO2 + H2}\]

• \[\ce{2NaOH + Zn -> Na2ZnO2 + H2O}\]

Answer 1

\[\ce{2NaOH + Zn -> Na2ZnO2 + H2}\]

Explanation:

The balanced chemical equation for the reaction between sodium hydroxide and zinc is \[\ce{2NaOH + Zn -> Na2ZnO2 + H2}\]. This equation ensures that the number of atoms for each element remains equal on both sides of the reaction.