Q. Balance the equation: Fe + H2O Fe3O4+ H2
Ans: The given chemical equation is Fe + H2O Fe3O4+ H2
Iron + Water → Iron(III) Oxide + Hydrogen
Balanced chemical equation: 3Fe + 4H2O Fe3O4+ 4H2
Note: Release of Hydrogen gas during the reaction can be confirmed by ‘pop test;.
- Pop test: Insert a lit splint into the test tube when hydrogen gas appears. With a distinctive “pop,” the burning splint should extinguish. (The flame may not be entirely extinguished if there is insufficient hydrogen gas, but this will not occur in this reaction.)
Balanced Chemical Equation:
A chemical equation is a representation of a chemical process in the form of substances. A balanced chemical equation is one in which the number of atoms in all of the molecules is equal on both sides of the equation.
- The balancing of a chemical equation is governed by the Law of Conservation of Mass.
- This law asserts that mass cannot be created or destroyed in a chemical reaction, and that the total mass of elements or molecules present on the reactant side must equal the total mass of elements or molecules present on the product side.
- The law of conservation does not apply if the chemical equation is not balanced.