When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved, which is utilized in the hydrogenation of oil.
I)name the gas evolved
II) Write the chemical equation of the reaction involved and also write a test to the gas formed.

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Solution

(i) Hydrogen gas is evolved when Zn metal reacts with dilute acids.

(ii) The reaction involved is:

$Z n + 2 H C l ⟶ Z n C l_{2} + H_{2}$

Test for $H_{2}$ gas When this gas is passed through soap solution and a burning splinter is brought near the soap bubble filled with gas, it burns with a pop sound.

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When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved, which is utilized in the hydrogenation of oil.I)name the gas evolvedII) Write the chemical equation of the reaction involved and also write a test to the gas formed.

(i) Hydrogen gas is evolved when Zn metal reacts with dilute acids. (ii) The reaction involved is: Zn+2HCl⟶ZnCl2+H2 Test for H2 gas When this gas is passed through soap solution and a burning splinter is brought near the soap bubble filled with gas, it burns with a pop sound.

When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved, which is utilized in the hydrogenation of oil.
I)name the gas evolved
II) Write the chemical equation of the reaction involved and also write a test to the gas formed.