Report
4
Determine Commerce
Vinegar Rate used by Standard Solution is NaOH Solutions 0,1 M
I.
Propose
To determine commerce vinegar rate used by standard solution is NaOH
solutions 0,1 M.
II.
Based theory
Acid and Base reaction can
be used to determine the concentration of unknown acid and base solutions. The
determination is conducted by titration. Type titration there is 2 :
a. Acidimetric
Is a
base solution with unknown concentration
is titrated with acid.
b. Alkali
metric
Is
an Acid solution with unknown concentration
is titrated with base.
At the experiment , we will
concentration observation from commerce vinegar rate
using by standard solution is NaOH 0,1 M. we do at the experiment titration type Acidimetric.
III.
Tools and material
Burette
50 ml 1
Stand 1
Graduated
cylinder of 25 ml 1
Erlenmeyer
flask of 100 ml 1
Pasteur
pipette 2
Test
tube 1
Test
tube shlf 1
Chemical
glass of 100 ml 3
Measure
gourd of 100 ml 1
Tissue
Measure
pipette 1
commerce vinegar rate
PP
indicator
Aquades
NaOH
0,1 M 50
ml
IV.
Procedure
1. Prepare
tools and material we needed.
2. Thinning
commerce vinegar rate 10 ml with water up to volume
100 ml used by measure gourd.
a. Measure CH3COOH counted 100 ml used by measure glass
b. Move CH3COOH
which have been measured into the measure gourd up to volume 100 ml
c. Shake slowly.
3. Pour NaOH 0,1 M into the burette up to 0 scale used by funnel.
4. Pour CH3COOH thinning result into the Erlenmeyer flask
counted 20 ml.
5. Add PP indicator counted 3 drip used by Pasteur
pipette into the erlenmeyer flask.
6. We
do titrated, at the same time shaken down Erlenmeyer
flask up to the changed color become pink color.
7. Discontinue titrated.
8. Repeat procedure 3 – 7 until thrice.
V.
Result of observation
Experiment
|
CH3COOH volume (ml)
|
NaOH volume (ml)
|
1
|
20
|
3,5
|
2
|
20
|
3,5
|
3
|
20
|
3,5
|
VI. Calculations
a. Ma.
Va = b. Mb. Vb
1. Ma.
20 = 1. 0,1. 3,5
Ma =
= 0,085 º 0,01M
·
M1.V1
= M2.V2
M1.10 = 0,01.20
M1 = 0,02 M
·
M =
p.10. kadar
mm
0,02 = 1,05.10. kadar
60
1,2 = 10,5. Kadar
Kadar = 1 %
VII. Photos
Titration
process
change color at titration process
VIII. Bibliography
Utami, Budi, Agung Nugroho
Catur Saputro, Lina Mahardiani, Sri Yamtinah, Bakti Mulyani.
2006. Simpati. Surakarta:Grahadi.
Sudarmo, Unggul. 2004. Kimia. Surakarta:Seri Made Simple.
Susilowati, Endang. 2009. Chemistry. Solo:Tiga Serangkai
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