Question

Describe an activity to show that hydrogen is produced when dilute hydrochloric acid reacts zinc granules

Answer 1

take zinc granule in flash and slowly add hcl there is gas realised then take buring candle near gas bubble it burst with pop sound

Answer 2

Take few pieces of zinc granules and add 5 ml of dilute HCl. Shake it and pass the gas produced into soap solution. The bubbles of the soap solution are formed. These soap bubbles contain hydrogen gas.

2HCl + Zn⇒ Zn ($Cl_{2}$ )+2$H_{2}$

We can test the evolved hydrogen gas by its burning with a pop sound when a candle is bought near the soap bubbles.

Hydrogen gas is usually liberated when an acid reacts with a metal.