Where does the gas come from when metal reacts with acid?

Answer 1

No. Copper will not react with most acids. It will react with nitric acid to produce nitrogen dioxide. Gold and platinum will not react with nitric acid but will react with aqua regia, a mixture of hydrochloric and nitric acids to produce nitrogen dioxide and some nitric oxide.

Rhenium does not react with acid at all.

Answer 2

It comes from the acid. most acids have hydrogen in them such as Hydrochloric Acid (HCl) or nitric acid (HNO3)

Answer 3

this would come from the acid (H3O+). Magnesium doesn't have hydrogen since it is a metal

Answer 4

yes, the process is called substitution. Say 3HCl + Al => AlCl3 +3H2 you will get aluminum chloride and hydrogen gas.

Answer 5

Acids contain Hydrogen ions and it these that get converted to hydrogen gas when reacting with a metal. As an example magnesium reacting with hydrochloric acid Mg + 2HCl ------> MgCl2 + H2

Answer 6

Usually, though it depends on the specific acid and metal.

Answer 7

Hydrogen gas

Answer 8

Yes, it a common reaction.