IMPLEMENTATION PLAN FOR LEARNING
MEETING TO IV IDENTIFICATIONS OF ORGANIC COMPOUNDS
Faculty Study Program : Faculty of Mathematics and Natural Sciences Chemistry
Courses Code : Practical Organic Chemistry II
Number of credits : 1 sks
Semester and Time : 4 dan 2 x 50 xmenit
I . Satndar Competency:
Understanding the properties of organic compounds, methods of identification and organic reactions of organic compounds.
II. Basic competence
Predicting the occurrence of a positive reaction to the identification of reactions of organic compounds.
III. indicator
1. Explaining the effect of adding chemical reagents to organic compounds that have a particular functional group.
2. Determine changes that occur from raeksi-reaction identification of organic compounds. \
IV. Learning objectives
1. Students can describe organic compounds through the reagent identification 2. Students can write the reaction that occurs from the identification of organic compounds
V. Learning Materials
1. Identification of Compounds alkenes Reagent bromine in carbon tetra chloride Br2CCl4 red brown, his reaction to alkenes are
addition reactions. Bromine heterolisis split into Br + and Br-alkene π electrons then strike Br + ions form a cyclic bromonium. Ion is attacked by nukleoofil Br-form colorless reaction
products are compounds 1,2 - dibromo alkene. Molecular reaction is as follows:
C C
+ Br 2 CCl 4
suhu kamar C
C Br
Br coklat merah
alkena bromin
dibromo alkena tidak berwarna
2. Identification of Alkyl halide compounds
Compounds alkyl halide or halogen senywa has the formula RX with R = alkyl or aryl and X is halogen F, Cl, Br and I. If R = alkyl is an alkyl halide alifatis and if R = aryl phenyl is an
alkyl halide aromatic. Alkyl halide compound functional group is - X - F, - Cl, - Br, - I. Functional groups using reagents can diidenntifikasi perag nitrate. Idetifikasi reaction is for
example are:
R X
+ AgNO 3 AgX + R NO 3
l l
l s
If the halogen X is Cl in the compounds R - X will happen a white precipitate, if X = Br will happen yellowish white precipitate, and if X = I will place a yellow precipitate.
3. Identification of Compounds Alcohol
Alcohol has the formula R-OH when R = alkyl alcohol is alifatis and if R = aryl is an aromatic alcohol. Alcohol alifatis can be identified using chromic acid reagent. Primary
alcohols with chromic acid will occur aldehydes and ketones secondary alcohol will occur. . While the aromatic alcohol can be identified using 5 FeCl3 reagent.
4. Identification of Compounds Aldehydes
Aldehyde has the formula R - COH can be identified using Fehling reagent, Benedicts reagent and reagent Tollen.s. Fehling and Benedicts reagent with aldehyde compounds at the
end of the reaction will occur Cu2O precipitate the red brick. While reagents Tollen.s at the end of the silver mirror reaction will occur. Fehling reagent Fehling differentiated into A
which consists of a solution of CuSO4 and. NaOH, while Fehling B solution consisting of sodium potassium tartrate together with Benedicts reagent Fehling reagent Benedict used the
difference in citric acid instead of potassium sodium tartrate solution .. Reagents Tollen, s is a solution of silver diamine which can be made from a solution of AgNO3 added a solution of
NH4OH. Aldehydes with the reagent Tollen, s will form a silver mirror: The reaction is as follows:
+ 2 Ag + 3 OH R
C O
R C
H O
O + 2 Ag + 2 H 2O
aldehid ion asetat
cermin perak
5. Identification of Compounds Ketones
Ketone has the formula R - CO - R can be identified using the reagent 2,4 - dinitro fenilhidrazin.
The reaction was positive if a yellow precipitate of compound terbenntuk osazon
+
keton 2,4 - dinitro fenilhidrazin
R 1
R 2 C
NH 2 NH
NO 2 NO 2
R 1
R 2 C
O
N NH
NO 2 NO 2 + H 2 O
endapan kuning
6. Identification of Phenol Compounds
Phenol compounds are aromatic alcohol compounds, can be identified using FeCl3 Ragen 5 will occur komnplek compounds that bermerah, blue green or purple. For the phenol
class of compounds of natural materials usually memnerikan violet color.
VI. Learning Methods
Method: Lecture, question and answer Approach: -
VII. Learning Steps No
Activity Time
1. Preliminary
5 minutes
a. opening 1. Lecturer in greeting open class
2. Lecturer check student attendance 3. Collect lab reports from previous
b. apperception 1. Lecturer gives an example of installing a practicum
2. problem Why are organic compounds can be identified and fantasize that
the influence of the functional group. 2.
Core Activities lecturer:
a. Inform briefly about the identification of reaction b. Divide the class into 10 groups
students: a. Noting the information from the lecturer
b. Conducting experiments 90 minutes
3. Cover
Message: do problems that exist in the user guide appropriate practicum practicum each event and make
practical reports 5 minutes
VIII. Tools and Learning Resources
Worksheets experiments, equipment and lab materials, manuals Organic Chemistry II lab
IX. Appraisal
Assessment Sheet for Internship Experiments in the laboratory No
Student name The presence in
conducting Activeness in
conducting Cooperation in
carrying out activities
1. 2.
3. 4.
X. Exercises
1. Explain what changes occur if the compound bbromin alkene plus reagent in the solvent carbon tetra chloride and write down the reaction mechanism?
2. Phenol can be identified using FeCl3 reagent 5 how molecules react? 3 Answer :
1. Changes that occur in the identification of alkenes with Br2CCl4 reagents can be described as follows:
C C
+ Br 2 CCl 4
suhu kamar C
C Br
Br coklat merah
alkena bromin
dibromo alkena tidak berwarna
Reaction mechanism is: Br 2
+ heterolisis
Br B r Br
Br
H H
H H
Br C
C Br
H H
C C
H H
C C
Br H
H H
H
+ Br
H
H H
H
C C
Br Br
Br H
H H
H
C C
Br Br
H
H H
H
C C
a a
b b
1,2- dibromo etana
2. Phenol compounds and natural materials phenol group usually gives violet color. With 5 FeCl3 reagent. The reaction is as follows:
O OH + FeCl 3
Fe 6
3
fenol warna violet
6 + 3 HCl + 3 H
IMPLEMENTATION PLAN FOR LEARNING
MEETING TO V THIN LAYER CHROMATOGRAPHY
Faculty Study Program : Faculty of Mathematics and Natural Sciences Chemistry
Courses Code : Practical Organic Chemistry II
Number of credits : 1 sks
Semester and Time : 4 dan 2 x 50 xmenit
I Competency Standards:
Understanding the properties of the eluent, adsoeben and analysis of thin-layer chromatography TLC
:II. Basic Competence
Predicting the appropriate use of the eluent to separate the organic compounds
III. Indicator
