2!
The reactant, because it is reacting to form the product of H2O.
It can be both.
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
reactant is the state before equilibrium exist and product is the state which exist after equilibriumThe law of conservation of charge
For copper, it is an element. It could be both reactant and product. While purifying copper will be the product. But copper would be the reactant in case of preparing hydrogen or copper sulphate salts.
The reactant, because it is reacting to form the product of H2O.
It can be both.
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
This is the law of mass conservation.
For copper, it is an element. It could be both reactant and product. While purifying copper will be the product. But copper would be the reactant in case of preparing hydrogen or copper sulphate salts.
Water can be either a reactant, or a product. It really depends on the type of chemical equation. Here are examples of both water being on the reactant side, and the product side. Reactants 2H2O ===> 2H2 + O2 HCl + H2O ===> Cl- + H3O+ Products CH4 + 2O2 ===> CO2 + 2H2O 2H2O2 ===> 2H2O + O2
reactant is the state before equilibrium exist and product is the state which exist after equilibriumThe law of conservation of charge
For copper, it is an element. It could be both reactant and product. While purifying copper will be the product. But copper would be the reactant in case of preparing hydrogen or copper sulphate salts.
the reactants are hydrogen and water, and the product is oxygen.
In some reactions water is a reactant, but in others it is a product. Ex: HCl + NaOH --> NaCl + water (water is a product) Na + water --> NaOH + hydrogen gas (water is a reactant)
produce
Sugar can be both a reactant and a product.