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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