Lesson Plan | Socioemotional Learning | Salt Hydrolysis Equilibrium

Objective

Duration: (10 - 15 minutes)

This stage aims to introduce students to the topic of salt hydrolysis, emphasizing the significance of understanding the acid-base properties of the resulting solutions. The goal is to prepare students for solving practical problems, fostering cognitive development while promoting socio-emotional skills through group work and collaborative discussions.

Objective Utama

1. Enhance students' ability to identify and comprehend salt hydrolysis in various solutions, determining if the resulting solution is acidic or basic.

2. Utilize knowledge of salt hydrolysis to tackle problems, calculating the final concentration or pH of the solution.

Introduction

Duration: (15 - 20 minutes)

Emotional Warmup Activity

Guided Meditation for Focus and Clarity

For our emotional warm-up, we'll be doing Guided Meditation. This practice helps boost focus, presence, and concentration, creating a positive learning atmosphere. Guided meditation reduces stress and anxiety, helping students engage more deeply with the chemistry concepts we'll be exploring, specifically equilibrium and salt hydrolysis.

1. Ask students to sit comfortably in their chairs, with feet flat on the floor and hands resting in their laps.

2. Instruct them to close their eyes and take several deep breaths, inhaling through the nose and exhaling through the mouth.

3. Begin guiding the meditation with a calm and soothing voice. Encourage students to focus on their breathing, feeling the air enter and leave their lungs.

4. Ask them to visualize a serene and relaxing place, like a beach or a garden filled with flowers. Describe this environment in detail to help them imagine the sights, sounds, and scents.

5. Guide them to remain focused on this visualization for a few minutes, letting go of any distractions or worries.

6. Gradually bring their attention back to the classroom, ensuring they retain a sense of calm and focus.

7. Conclude the meditation by inviting them to slowly open their eyes and take a deep breath before we dive back into the lesson.

Content Contextualization

Salt hydrolysis is a chemical process that plays a hidden yet crucial role in our everyday lives. Understanding this concept can enhance our knowledge of how acidic and basic solutions function in household cleaning products and industrial water treatments. Moreover, salt hydrolysis is vital in environmental chemistry, explaining how pollutants interact with bodies of water, which can impact entire ecosystems.

By connecting these practical examples to salt hydrolysis, we aim to spark curiosity and motivate students. They'll see that what they learn in the classroom has tangible real-world applications, encouraging deeper engagement and meaningful learning. Additionally, this connection reinforces the need for responsible decision-making—an important socio-emotional skill we aim to cultivate throughout the lesson.

Development

Duration: (60 - 75 minutes)

Theory Guide

Duration: (20 - 25 minutes)

1. Basic Overview of Salt Hydrolysis

2. Salt hydrolysis is the process that occurs when a salt dissolves in water and its ions react with the water to create either an acid or a base, potentially altering the pH of the solution.

3. Types of Salts

4. Neutral Salts: These form from the reaction between a strong acid and a strong base and do not affect the solution's pH (e.g., NaCl).

5. Acidic Salts: These come from the reaction between a strong acid and a weak base, making the solution acidic (e.g., NH4Cl).

6. Basic Salts: These result from a weak acid reacting with a strong base, which makes the solution basic (e.g., NaCH3COO).

7. Hydrolysis Reactions

8. Neutral Salts Hydrolysis: Shows no significant reaction (e.g., NaCl → Na⁺ + Cl⁻).

9. Acidic Salts Hydrolysis: The cation reacts with water, releasing H⁺ (e.g., NH4⁺ + H2O → NH3 + H3O⁺).

10. Basic Salts Hydrolysis: The anion reacts with water, yielding OH⁻ (e.g., CH3COO⁻ + H2O → CH3COOH + OH⁻).

11. Real-World Examples

12. Ammonium Chloride (NH4Cl): Undergoes acidic hydrolysis (NH4⁺ + H2O → NH3 + H3O⁺), resulting in an acidic solution.

13. Sodium Acetate (NaCH3COO): Undergoes basic hydrolysis (CH3COO⁻ + H2O → CH3COOH + OH⁻), leading to a basic solution.

14. pH Calculation

15. To determine the pH of a solution produced by hydrolysis, you need to know the dissociation constant of the acid (Ka) or the base (Kb) and apply concepts of chemical equilibrium.

16. For example, when calculating the pH of an NH4Cl solution, the Ka of NH4⁺ is necessary to find the concentration of H3O⁺ and subsequently calculate the pH.

Activity with Socioemotional Feedback

Duration: (35 - 45 minutes)

Case Study Analysis of Salt Hydrolysis

Students will break into groups and receive various compounds to investigate the salt hydrolysis. They will determine if the final solution is acidic or basic and calculate the pH or final concentration.

1. Organize the class into groups of 3 to 4 students.

2. Distribute different cases of salt hydrolysis (e.g., NH4Cl, NaCH3COO, etc.) to each group.

3. Each group should discuss and address the following points:

4. a. Identify whether the salt is neutral, acidic, or basic.

5. b. Write down the corresponding hydrolysis equation.

6. c. Calculate the pH or final concentration of the solution.

7. Once they've worked through their cases, groups will present their findings to the class.

8. Encourage questions and constructive feedback during the presentations.

Discussion and Group Feedback

Utilize the RULER method during discussions, prompting students to recognize and understand emotions involved in teamwork, such as frustration or excitement. Encourage them to name those emotions and express them appropriately during presentations. Guide them in regulating negative emotions by seeking collaborative solutions and maintaining respectful dialogue.

During the feedback phase, invite students to share their feelings during the analysis. Discuss how cooperation and idea exchange can enhance both learning and problem-solving. Emphasize the importance of actively listening to their peers and valuing different opinions, fostering a supportive classroom environment.

Conclusion

Duration: (15 - 20 minutes)

Reflection and Emotional Regulation

To help students reflect on the challenges encountered during the lesson and how they managed their emotions, ask them to write a brief paragraph about their experiences in the group activity. Alternatively, facilitate a classroom discussion where each student can share reflections on their toughest moments and discuss how they navigated feelings like frustration, anxiety, or excitement. Encourage honesty and reflection on strategies they employed to stay calm and collaborative.

Objective: The goal of this section is to promote self-assessment and emotional regulation, assisting students in identifying effective strategies for handling challenges. This process allows them to reflect on their emotional responses and develop skills to better manage their emotions in academic and personal contexts.

Glimpse into the Future

To conclude the lesson, ask students to set personal and academic goals related to what they've learned. They can write these goals down or engage in a brief discussion with the class. These goals may include enhancing their grasp of salt hydrolysis, applying knowledge in other subjects, or practising socio-emotional skills like cooperation and self-regulation.

Penetapan Objective:

1. Deepen theoretical and practical understanding of salt hydrolysis.

2. Apply learned knowledge to real-world chemistry problems.

3. Cultivate teamwork and communication skills.

4. Practice emotional regulation during challenging academic situations. Objective: The aim of this section is to strengthen students' autonomy and practical application of their learning, promoting continuous academic and personal growth. By setting goals, students take ownership of their development and establish benchmarks for measuring their future progress.