Hydrogen can be a reactant or a product, it depends on the chemical reaction. Anything to the left of the arrow is consumed by the reaction and is thus a reactant, so hydrogen is a reactant in the reaction O2 + 2H2 -> 2H2O.
A product is on the right of the arrow and is produced by the reaction, so hydrogen is a product in the reaction Zn + 2HCl -> ZnCl2 + H2
In water, H2O, there are two hydrogen atoms in the reactants.
nitrogen gas and hydrogen gas
The reactants in a fuel cell are typically hydrogen and oxygen. The hydrogen is usually supplied as a fuel source to the anode, while oxygen is supplied to the cathode.
The bond of reactants that is broken in 2NH3 is the nitrogen-hydrogen (N-H) bond.
The reactants of sodium hydroxide are sodium (Na), hydrogen (H), and oxygen (O). When sodium metal reacts with water, sodium hydroxide is formed along with hydrogen gas.
In water, H2O, there are two hydrogen atoms in the reactants.
The reactants are hydrogen and nitrogen.
hydrogen and oxygen
Reactants are the raw ingredients before the experiment and products are what the the experiment produces. For instance if you ignite hydrogen and oxygen then the Reactants are hydrogen and Oxyhen and the Products are water (formed form the Hydrogen and Oxygen) and heat.
Sodium chloride doesn't react with hydrogen.
nitrogen gas and hydrogen gas
hydrogen and oxygen
The reactants in a fuel cell are typically hydrogen and oxygen. The hydrogen is usually supplied as a fuel source to the anode, while oxygen is supplied to the cathode.
The metal and the acid are the reactants. A metal salt and usually hydrogen gas are the products.
The reactants in this reaction are sodium (Na) and hydrochloric acid (HCl).
2
The bond of reactants that is broken in 2NH3 is the nitrogen-hydrogen (N-H) bond.