Question

Complete the following reaction: $Zn(s)+NaOH(aq) \underrightarrow{heat}$

Answer 1

Zn+2NaOH ➡️ Na2ZnO2 + H2

Answer 2

Answer:

Explanation:

When zinc (Zn) react with excess sodium hydroxide (NaoH), the compound sodium zincate (Na2ZnO2) along with hydrogen gas is formed. Zinc is a transition metal that shows moderate reactivity. Since, zinc is amphoteric, it reacts with NaOH to form sodium zincate with the evolution of hydrogen gas. This reaction takes place at a temperature near 550°C.  

The equation so formed is -

Zn + 2NaOH → Na2ZnO2 + H2  

2Zn(OH)2 + 2 NaOH > Na2ZnO2 + 3H2O

where the reaction is an endothermic reaction