In a hydrochloric acid and magnesium single replacement reaction, hydrogen is given off.
Thereaare so many. Main reactions like alkaline metals reacting with acids
For example the reaction of alkali metals with water release hydrogen.
The reaction of aluminium with a base, of methane with water, of zinc with acids, etc. also produce hydrogen.
single replacement
decomposition, or maybe electrolysis
H2
The reaction produces hydrogen gas as will most reaction between an acid and a metal.
The reaction between sulfuric acid and zinc produces zinc sufate and hydrogen gas
This is because the reaction of an acid, in this case case HCl, and a metal, in this case Zn, produces a salt, again, in this case ZnCl2, and hydrogen gas.
The electrolysis of water produces oxygen and hydrogen gas. 2H2O --> 2H2 + O2
This is a chemical reaction. A decomposition reaction.
The reaction produces hydrogen gas as will most reaction between an acid and a metal.
it results in hydrogen gas and sodium chloride.
The reaction between sulfuric acid and zinc produces zinc sufate and hydrogen gas
A reaction that produces gas is called a gas-evolving reaction or a gas-forming reaction.
This is because the reaction of an acid, in this case case HCl, and a metal, in this case Zn, produces a salt, again, in this case ZnCl2, and hydrogen gas.
The electrolysis of water produces oxygen and hydrogen gas. 2H2O --> 2H2 + O2
This is a chemical reaction. A decomposition reaction.
magnesium + dilute acid=magnesium dilute hydroxide and hydrogen
Zn + H2SO4 -> ZnSO4 + H2 Produces zinc sulfate and hydrogen gas.
No acid is formed. The reaction produces hydrogen gas and magnesium chloride, a salt.
Mg + H2SO4 -> MgSO4 + H2 Produces a salt, magnesium sulphate, and hydrogen gas.
2 parts hydrogen gas reacts with 1 part oxygen gas in the air to form water vapor. combustion 2H2 + O2 ---------> 2H20