LESSON PLAN
By : Marcia Sri Purwantiningsih & Raya Dewi
School
Subject Matter
Topic
Subtopic
Grade/semester
Time Allocated
: SMA Negeri
: Chemistry
: Acid - Base
: Acid-Base theory
: XI/ II
: 1 x 45 minutes
Standard competency
4.Understanding acid base solution
properties, measurement method and its
application
Basic competency
4.1. Describing acid-base theory by
determination of solution properties and
calculate pH of solution
Learning Objectives:
Through this course, the student is expected
to able:
Explaining acid-base definition of Arrhenius
Explaining Bronsted-Lowry theory of acids-bases
Explaining Lewis theory of acids-bases.
Writing acid-base reaction according to
Bronsted and Lowry and indicating conjugated
acid-base pair
The Model, Approach, and Method on
Learning
Model : Constructivism
Strategi : Cooperative learning type
Group Investigation
Approach: Concept and process skill
approach
Method : Demonstration, discuss,
information concept
Teaching-Learning Processes
Introduction
Preknowledge :
Do you still remember about the electrolyte solution
and what it elektrolite solution? why electrolyte
solution can conduct electricity ?. Is there any
division in the electrolyte solution and mention.
Introduction
Motivation
Teacher demonstrations PP indicators shed on the
solution (solution without the label's name). Then
the teacher asked the students if this solution try to
mention about this musty solution. Write the
formula chemical of that solution.
Now, what is acid-base according to acid base
Arrhenius theory, Bronsted Lowry theory and Lewis
acid base theory ?
Exploration and Elaboration
Make work the groups of four people. Then your
discussion of worksheet this.
Students are discussion about acid-base of
Arrhenius theory, Bronsted- Lowry theory, and Lewis
theory and then presentation this.
Teacher explain about concept acid bases of
Arrhenius theory, Bronsted-Lowry theory and Lewis
theory.
Can you find out the similarities and differences of
acid-base theories such ?
Confirmation
•To better understand the theory of acid base so
now I ask you guys to do the practice questions in
the book pages 125
•Teachers together with students to make
conclusions about the theory of acid-base by
giving questions. Describe acid-base theory
Arrhenius, Bronsted Lowry, Lewis
Closing Learning Source
Well, if no problem about this lesson. I hope
you do exercise at home and collect at next
meeting. Now, We can stop now. Don’t forget
to do your homework. See you on the next
week.
Assessment
Learning Assessment Procedure:
Techniques : Written Test
Types
: Multiple Choice/ Essay
Process skill
: Presentation, Inferring
Learning Materials
Prerequisite material
Elektrolite solution
Identify acids-bases by indicator
Main Concept
Acid-base theory : Arrhenius, Bronsted
Lowry, and Lewis
Arrhenius Theory
Acid
HCl (aq) + H2O → H3O+ (aq) + Cl- (aq)
CH3COOH (aq) + H2O → H3O+ (aq) +
CH3COO- (aq)
H2SO4(aq) + H2O → H3O+ (aq) + HSO4(aq)
According to Arrhennius theory, what is
meant acid ?
Base
NH3 (aq) + H2O (l)  NH4+ (aq) + OH-(aq)
NaOH (aq) + H2O(l)  Na +(aq) + OH-(aq)
Mg(OH)2 (aq) + H2O(l)  Na +(aq) + OH-(aq)
According to Arrhennius theory, what is
meant acid ?
Bronsted-Lowry Model
Bronsted
Lowry
AH + B → BH+ + AGeneral formula for representing BrønstedLowry reactions. AH is acid and B is base
HCl (aq) + H2O → H3O+ (aq) + Cl- (aq)
Hydrochloric acid completely reacts with
water to form the hydronium and chloride
ions
CH3COOH + NH3 → NH4+ + CH3COOAcetic acid as acid reacts incompletely with
ammonia. Acetic acid as acid and ammonia
as base
According to Arrhennius
theory, what is meant acid
and base?
Determine the species of acids and
bases from the reaction below
CH3COOH + H2O === CH3COO- + H3O+
NH3 + H2O === NH4+ + OHCH3COO- + H2O === CH3COOH + OHNH4+ + H2O === NH3 + H3O+
Lewis Model