Q26 of 28 Page 14

State what happens when zinc granules are heated with sodium hydroxide solution. Write the balanced chemical equation for the reaction. Name the main product formed in this reaction.

When zinc granules are heated with sodium hydroxide solution, produce sodium zincate (Na2ZnO2) and hydrogen gas. The reaction is:

Zn + 2NaOH → Na2ZnO2 + H2


Note: When a metal and a base react with each other, they form a metal salt and hydrogen gas.


In the above reaction, zinc is a metal and sodium hydroxide is a base. When they combine, give a metal salt, i.e., sodium zincate and hydrogen gas are formed.


The main product formed in this reaction is sodium zincate, i.e., Na2ZnO2.


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