To prepare hydrogen gas we need...
We will first fix a test tube on the stand.
Once the test tube is fixed, we will add zinc granules into it.
We will place a lighted match stick near the mouth of the test tube.
Do you notice any changes? No, there are no changes.
Do you hear any sound? There is no sound.
Now I will add some hydrochloric acid into the test tube that has zinc granules.
You notice fizzing fumes.
You also hear a 'POP' sound.
The match stick is extinguished, there is a POP sound and the gas starts buring on its own.
Which gas burns on its own? Hydrogen.
Zinc reacts with hydrochloric acid to emit hydrogen gas.
Let's see this in the form of an equation.
