Question

Name the gas evolved when zinc granules are treated/heated with:

sodium hydroxide solution

What happens when zinc granules are heated with sodium hydroxide solution? Write equation of the reaction which takes place.

Answer 1

 Zinc reacts with sodium hydroxide, giving sodium zincate and hydrogen gas.
         Zn(s) + 2NaOH(aq)→ Na₂ZnO₂(aq) + H₂(g)

Answer 2

When zinc granules are heated with sodium hydroxide (base), sodium zincate salt is formed with the liberation of hydrogen gas.

   Zn (s) + 2 NaOH(aq)  Na₂ Zn O₂ (aq) + H₂ (g)