Ok, if you're saying metals in general, you can say acids in general.
All acid + metal reactions produce the same gas : Hydrogen.
That is because the metal replaces hydrogen, hydrogen is released as gas(H2)
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When hydrochloric acid (HCl) reacts with a metal, hydrogen gas is produced. This is because the metal displaces hydrogen from the acid, forming hydrogen gas and a salt of the metal. The general chemical equation for this reaction is: 2HCl (aq) + 2M (s) → 2MCl (aq) + H2 (g), where M represents the metal.
When a metal reacts with dilute hydrochloric acid, hydrogen gas is produced. This is because the metal displaces hydrogen from the acid, forming metal chloride and releasing hydrogen gas.
Hydrogen gas is produced when an acid reacts with a metal. This reaction is a redox reaction in which the metal displaces hydrogen from the acid to form hydrogen gas.
Hydrogen gas is liberated when metals react with acid. The explanation lies in the fact that the the presence of hydrogen in a substance makes it acidic. so, every acid will contain Hydrogen. When metals reach with an acid, they form their respective salts according to the acid and always liberate hydrogen from that acid. If the acid is H2SO4, then the salt will sulfate of whichever metal reacts with the acid. If the acid is HCl, then the product would be metal chloride.
When metals react with dilute hydrochloric acid, hydrogen gas is produced. This is because the metal atoms displace hydrogen atoms from the acid, forming metal chloride and releasing hydrogen gas as a byproduct.
When acids react with some metals, they produce hydrogen gas and a salt of the metal. The metal replaces hydrogen in the acid to form a salt, while hydrogen gas is released as a byproduct of the reaction. This process is known as a single displacement reaction or a metal-acid reaction.