50 Examples of Balanced Chemical Equations with Answers
Chemical reactions happen all around us, from cooking food to rust forming on iron. These reactions are written as chemical equations, which show how substances change into new substances. But just writing an equation is not enough – it must be balanced to follow the Law of Conservation of Mass. This law states that matter cannot be created or destroyed in a chemical reaction. So, the number of atoms of each element must be the same on both sides of the equation.
What is a Balanced Chemical Equation?
A balanced chemical equation represents a chemical reaction where the number of atoms for each element is the same on both the reactant and product sides. For example:
2H2 + O2 → 2H2O
Why is Balancing Chemical Equations Important?
Balancing chemical equations is necessary because:
- It follows the Law of Conservation of Mass – The total mass of reactants must equal the total mass of products.
- It ensures correct chemical proportions – In real-life reactions, incorrect proportions can cause dangerous or ineffective results.
- It helps in calculations – Scientists and engineers use balanced equations to calculate how much of each substance is needed or produced.
How to Balance a Chemical Equation?
- Write the unbalanced equation.
- Count the number of atoms of each element on both sides.
- Use coefficients (whole numbers) to balance atoms.
- Ensure that the mass is conserved.
- Double-check your answer.
Download: 50 examples of balanced chemical equations with answers pdf
In this article, you will find 50 examples of balanced chemical equations with answers. These examples include different types of reactions such as combustion, synthesis, decomposition, single replacement, double replacement, acid-base neutralization, redox, and precipitation reactions.
If you are a Class 10 student, this list will help you prepare for exams. If you want to study offline, you can also download the 50 examples of balanced chemical equations with answers PDF provided at the end of this article.
Let’s explore these 50 balanced chemical equations and understand how to apply them!
50 Examples of Balanced Chemical Equations with Answers
1. Combustion Reactions
- CH4 + 2O2 → CO2 + 2H2O
- C3H8 + 5O2 → 3CO2 + 4H2O
- C2H6 + 7/2 O2 → 2CO2 + 3H2O
- C4H10 + 13/2 O2 → 4CO2 + 5H2O
- C6H12O6 + 6O2 → 6CO2 + 6H2O
2. Synthesis (Combination) Reactions
- 2H2 + O2 → 2H2O
- N2 + 3H2 → 2NH3
- 2Na + Cl2 → 2NaCl
- CaO + CO2 → CaCO3
- 2Mg + O2 → 2MgO
3. Decomposition Reactions
- 2H2O → 2H2 + O2
- CaCO3 → CaO + CO2
- 2HgO → 2Hg + O2
- 2KClO3 → 2KCl + 3O2
- NH4NO3 → N2O + 2H2O
4. Single Replacement Reactions
- Zn + 2HCl → ZnCl2 + H2
- Fe + CuSO4 → FeSO4 + Cu
- Mg + 2HCl → MgCl2 + H2
- Cu + 2AgNO3 → Cu(NO3)2 + 2Ag
- Al + Fe2O3 → Al2O3 + Fe
5. Double Replacement Reactions
- AgNO3 + NaCl → AgCl + NaNO3
- BaCl2 + Na2SO4 → BaSO4 + 2NaCl
- HCl + NaOH → NaCl + H2O
- Pb(NO3)2 + KI → PbI2 + 2KNO3
- Na2CO3 + CaCl2 → CaCO3 + 2NaCl
6. Redox Reactions
- Fe2O3 + 3CO → 2Fe + 3CO2
- MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O
- 2K + 2H2O → 2KOH + H2
- CuO + H2 → Cu + H2O
- 2Al + Fe2O3 → Al2O3 + 2Fe
6. Acid-Base Neutralization Reactions
- HCl + NaOH → NaCl + H2O
- H2SO4 + 2NaOH → Na2SO4 + 2H2O
- HNO3 + KOH → KNO3 + H2O
- CH3COOH + NaOH → CH3COONa + H2O
- H2CO3 + Ca(OH)2 → CaCO3 + 2H2O
8. Precipitation Reactions
- Pb(NO3)2 + 2KI → PbI2 + 2KNO3
- BaCl2 + Na2SO4 → BaSO4 + 2NaCl
- NaOH + CuSO4 → Cu(OH)2 + Na2SO4
- CaCl2 + Na2CO3 → CaCO3 + 2NaCl
- FeCl3 + NaOH → Fe(OH)3 + 3NaCl
7. Other Important Reactions
- KClO3 → KCl + O2
- NH3 + HCl → NH4Cl
- SO2 + O2 → SO3
- Na2O + H2O → 2NaOH
- P4 + 5O2 → P4O10
- Al2O3 + 6HCl → 2AlCl3 + 3H2O
- 2H2S + 3O2 → 2SO2 + 2H2O
- 2Fe + 3Cl2 → 2FeCl3
- 2K + Cl2 → 2KCl
- C + O2 → CO2
FAQs on 50 Examples of Balanced Chemical Equations with Answers
What is a balanced chemical equation?
A balanced chemical equation is a chemical reaction where the number of atoms of each element on the reactant side is equal to the number of atoms on the product side. This follows the Law of Conservation of Mass
Why do we need to balance chemical equations?
Balancing chemical equations ensures that mass is conserved during a reaction. It helps in calculating the correct proportions of reactants and products, which is essential for scientific experiments and industrial applications.
How can I balance a chemical equation easily?
You can balance a chemical equation by following these steps:
- Write the unbalanced equation.
- Count the number of atoms of each element.
- Add coefficients to balance the atoms on both sides.
- Check if the equation follows the Law of Conservation of Mass.
Where can I find 50 examples of balanced chemical equations?
You can find 50 examples of balanced chemical equations with answers in this article. If you need an offline reference, you can also download the 50 examples of balanced chemical equations with answers PDF from the link provided.
Are these balanced equations useful for Class 10 students?
Yes! These 50 examples of balanced chemical equations with answers cover important reactions commonly studied in Class 10 Chemistry. They help students understand different types of chemical reactions and prepare for exams effectively.
