Question

define why Dilute acids produce Hydrogen gas. define with an example​

Answer 1

Answer:

Most of the metals such as Al,Cu,Fe etc. reacts with dilute acids to produce hydrogen gas but magnesium is an exception. Magnesium being an active metal  liberates dihydrogen gas as it is allowed to react with dilute HCl.Thus all the given metals react with dilute acids.

Mg+2HCl→MgCl2+H2

Copper