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B TESTING pH LEVEL BY Dra. RAYA DEWI. BASIC COMPETENCE DESCRIBING ACID-BASE THEORY BY DETERMINATION OF SOLUTION PROPERTIES AND CALCULATE pH of solution.

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Presentation on theme: "B TESTING pH LEVEL BY Dra. RAYA DEWI. BASIC COMPETENCE DESCRIBING ACID-BASE THEORY BY DETERMINATION OF SOLUTION PROPERTIES AND CALCULATE pH of solution."— Presentation transcript:

1 B TESTING pH LEVEL BY Dra. RAYA DEWI

2 BASIC COMPETENCE DESCRIBING ACID-BASE THEORY BY DETERMINATION OF SOLUTION PROPERTIES AND CALCULATE pH of solution STANDARD OF COMPETENCE UNDER STANDING ACID–BASE SOLUTION PROPERTIES,MEASUREMENT METHOD AND ITS APPLICATION

3 AIM Determining the pH of solution drinks using pH meter. Comparing the results of pH measurements using a universal indikator with a pH meter.

4 APPRATUS / CHEMICALS APPRATUSCHEMICALS pH meterAquadest 12 beaker 200 ml size Soda 2 beaker 400 ml sizeSoap sirih liquid pH meterPocari sweat Test tubeKiranti Vit.A.IPI Vit. Lemon Cofee and Tea

5 1. Reconstituted various beverages and chemicals frequently used in 50 ml beaker. 2. pH estimated using the universal indikator of acid – base. 3. pH is determined using a pH meter. Note : Before measuring the pH electroda was immersed in the buffer or aquades. PROCEDURES

6 THE RESULT OF EXPERIMENT USING THE UNIVERSAL INDICATOR TEA : pH = 7 VIT. LEMON : pH = 4 POCARI SWEAT: pH = 4 COFEE: pH = 5 KIRANTI: pH = 4 SOAP SIRIH LIQUID : pH = 9 SODA: pH = 9 VIT. A. IPI: pH = 8 USING A pH METER TEA : pH = 5 VIT. LEMON : pH = 3,04 POCARI SWEAT : pH = 4,9 COFEE: pH = 5 SOAP SIRIH LIQUID: pH = 13,79 SODA: pH = 8,58

7 CONCLUSION CONCLUSION BY USING pH - METER,WE CAN FIND THE INFORMATION OF pH DIRECTLY BY A DIGITAL SCREEN ON THE INSTRUMENT. BUT, BASICALLY, MEASURING pH USING THE UNIVERSAL INDICATOR CAN GIVE A MEASUREMENT RESULT WHICH IS MORE PRECISE.

8 PROCESS SKILL  READING SCALE  MEASURING pH  INTERPRATE OF THE DATA


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