Chemistry : Balanced Chemical Equations from Word Equations
How to Obtain a Balanced Chemical Equation?
A chemical equation must be balanced in accordance with the Law of Conservation of Matter. The Law states that matter is neither created nor destroyed during the chemical change that occurs in a chemical reaction. So, the total mass of reactants must equal the total mass of products in a balanced chemical equation.
In a balanced chemical equation, the number of atoms of each element in the reactants equals the number of atoms of each element in the products, since atoms are neither created nor destroyed.
Word Equation : Sulfur + Sulfuric acid → Sulfur dioxide + Water
Molecular Equation : ___ S + ___ H2SO4 → ___ SO2 + ___ H2O
Balance O atoms : ___ S + ___ H2SO4 → ___ SO2 + 2 H2O
Balance H atoms : ___ S + 2 H2SO4 → ___ SO2 + 2 H2O
Balance S atoms : ___ S + 2 H2SO4 → 3 SO2 + 2 H2O
Balanced Equation : S + 2 H2SO4 → 3 SO2 + 2 H2O
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