penetapan normalitas na oh dengan bbp (cooh)2
DESCRIPTION
Presentasi Kelompok 5 KKPI (11-5)TRANSCRIPT
Basic
Reaction
Equipments and the Materials
Procedure
Calculation
Conclusion
Basic
NaOH can be react by oxalic acid
become sodium oxalic acid. Form the salt
(COONa)2. Because of NaoH is strong
base and oxalic acid is weak acid, so used
the PP indicator with the end point is
slightly pink.
Reaction
OHCOONaCOOHNaOH 22 2 2)( 2
(COOH)2 .
2H2O
NaOH 0,1 N
PP Indicator
Aquadest
1. Prepared the equipments and the materials thatis needed.
2. Balanced + 0,63 gr oxalic acid.3. Diluted by aquadest in volumetric flask.4. Take 10,00 ml of solution with volumetric
pipette 10 ml.5. Get into the erlenmeyer 250 ml.6. Diluted by aquadest until + 100 ml.7. Added 2-3 drops of PP indicator.8. Titrated by NaOH 0,1 N until the end point is
slightly pink.9. Write down the volume of titrant.10. Do the determination for twice.
Balance0.63 grams
of oxalic acid
Dissolve with aquadest, and make it homogen
Take 10.00 ml of solution
Dilute and add 2-3 drops of PP indicator
Titrate with NaOH 0.1 NEP : slightly pink
NaOHBstVpFp
samplemgNaOHN
• This titration include into netralization
titration.
• The method that used is direct titration• Normality of NaOH by using Oxalic Acid as primary raw
material can be calculated by formula:
NaOHBstVpFp
samplemgNaOHN
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