1. Tardigrade
  2. Question
  3. Chemistry
  4. 5 g of zinc is treated separately with an excess of (a) dilute hydrochloric acid and (b) aqueous sodium hydroxide. The ratio of the volumes of H2 evolved in these two reactions is :

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Q. 5 g of zinc is treated separately with an excess of
(a) dilute hydrochloric acid and
(b) aqueous sodium hydroxide.
The ratio of the volumes of $H_2$ evolved in these two reactions is :

JEE MainJEE Main 2020Hydrogen

Solution:

$Zn+2HCl \to ZnCl_{2}+H_{2}$
$Zn+2NaOH \to Na_{2} ZnO_{2}+H_{2}$
The ratio of the volume of $H_{2}$ is 1 : 1