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Comparative Analysis of pH Levels in Various Beverages Using Universal Indicator and pH Meter

This study explores the determination of pH levels in common beverages utilizing both a universal indicator and a digital pH meter. By examining drinks like tea, lemon juice, Pocari Sweat, coffee, and soap liquid, we compare the precision and accuracy of both measurement methods. The results indicate variability in pH readings, showcasing how a pH meter can provide direct readings but may not always match the precision observed with a universal indicator. This experiment reinforces the importance of understanding acid-base properties in practical applications.

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Comparative Analysis of pH Levels in Various Beverages Using Universal Indicator and pH Meter

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  1. TESTING pH LEVEL TESTING pH LEVEL BY Dra. RAYA DEWI b

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

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

  4. APPRATUS / CHEMICALS • APPRATUS CHEMICALS • pH meter Aquadest • 12 beaker 200 ml size Soda • 2 beaker 400 ml size Soap sirih liquid • pH meter Pocari sweat • Test tube Kiranti Vit.A.IPI • Vit. Lemon • Cofee and Tea

  5. PROCEDURES 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.

  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. 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. CONCLUSION

  8. PROCESS SKILL • READING SCALE • MEASURING pH • INTERPRATE OF THE DATA

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