Question

during the chemical reaction between dilute hydrochloric acid and Zinc metal a gas is evolved how the presence of the gas can be determined

Answer 1

when a burning splinter is introduced... pop sound is produced..... as the gas is Hydrogen gas

Answer 2

We will ex­am­ine the ex­am­ple of the in­ter­ac­tion of zinc and hy­drochlo­ric acid. Zinc also re­acts slow­ly with HCl, with the for­ma­tion of small bub­bles and the re­lease of hy­dro­gen. As a re­sult of the re­ac­tion zinc chlo­ride Zn­Cl₂ forms.

Zn + HCl → Zn­Cl₂ + H₂