Chemistry
Grade-10
Easy

Question

Write the below reaction in the form of equation. Sodium hydroxide reacts with Zn metal gives sodium Zincate and Hydrogen gas.

  1. Na left parenthesis OH right parenthesis subscript 2 plus Zn rightwards arrow Na subscript 2 ZnO subscript 2 plus straight H subscript 2
  2. NaOH plus Zn subscript 2 rightwards arrow NaZnO subscript 2 plus straight H subscript 2
  3. NaOH plus Zn rightwards arrow Na subscript 2 ZnO subscript 2 plus straight H subscript 2
  4. NaOH plus 2 Zn rightwards arrow Na subscript 2 ZnO subscript 2 plus straight H subscript 2

hintHint:

Hydrogen gas is liberated.

The correct answer is: NaOH plus Zn rightwards arrow Na subscript 2 ZnO subscript 2 plus straight H subscript 2


    Sodium hydroxide is a string base. Base reacts with metal it produces salt and hydrogen gas.
    Sodium hydroxide reacts with Zn metal gives sodium Zincate and Hydrogen gas.
    NaOH + Zn rightwards arrow Na2ZnO2 + H2 

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