Chemical equilibrium is a crucial concept in chemistry, describing the balance in reversible reactions where the forward and reverse reaction rates become equal. Understanding this topic not only helps grasp theoretical concepts but also equips students to solve numerical problems with precision.
In this article, we focus on solved numericals related to Chapter 9, “Chemical Equilibrium,” to provide a detailed guide for Class 10 students.
Topics Covered in These Notes
From the uploaded notes, the numericals address equilibrium constant calculations and reversible reactions. Core topics include:
- The decomposition of di-nitrogen oxide (N₂O) into nitrogen (N₂) and oxygen (O₂).
- Calculation of equilibrium constant (Kc) for given concentrations.
- Applications of equilibrium principles in real-world reactions.
Class 10th Chemistry Chapter 9 Exercise Solved Numericals
Example Problem: Decomposition of Di-Nitrogen Oxide
Problem Statement: For the decomposition of di-nitrogen oxide (N₂O) into nitrogen (N₂) and oxygen (O₂), the reaction is represented as:
2N₂O ⇌ 2N₂ + O₂
Given the equilibrium concentrations:
- [N₂O]: 1.1 mol dm-3
- [N₂]: 3.90 mol dm-3
- [O₂]: 1.95 mol dm-3
To Find: Calculate the equilibrium constant (Kc).
Solution:
The equilibrium constant expression for the reaction is:
Kc = ([N₂]2 × [O₂]) / ([N₂O]2)
Step-by-Step Calculation:
- Substitute the given concentrations:
Kc = (3.90)2 × (1.95) / (1.1)2 - Perform the calculations:
Kc = (15.21 × 1.95) / 1.21 - Simplify:
Kc = 29.6395 / 1.21 ≈ 24.49 mol dm-3
Result: Kc = 24.49 mol dm-3
Tool for Success in Exams
Practicing solved numericals like these is vital for mastering chemical equilibrium. These problems enhance:
- Conceptual clarity.
- Mathematical application of chemical laws.
- Preparation for board exams.
Colored Notes
The notes include highlighted sections for essential formulas and concepts, making it easier to locate critical information. This feature simplifies revision and aids retention.
Notes Are Free to Use
One of the key benefits of these solved numericals is their accessibility. Students can rely on these notes to deepen their understanding of equilibrium constants and reaction mechanisms without incurring any cost.
These resources are designed to provide an equal learning opportunity for all, empowering every student to excel in chemistry.
Notes Are Mistake-Free
Accuracy is critical in scientific studies, and these notes ensure that every solution is error-free. Each numerical has been cross-checked to guarantee correctness, making them a reliable resource for exam preparation. This assurance helps students confidently tackle similar problems in their exams.
Conclusion
Understanding chemical equilibrium through solved numericals is an essential skill for Class 10 students. The examples provided not only clarify theoretical concepts but also strengthen problem-solving abilities.
With precise and well-explained solutions, these notes serve as a comprehensive guide to mastering Chapter 9, ensuring academic success.