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Questions
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.
Solution 1
Zinc reacts with sodium hydroxide, giving sodium zincate and hydrogen gas.
Zn(s) + 2NaOH(aq)→ Na2ZnO2(aq) + H2(g)
Solution 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)
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