Improvement of the precision in the measurement of pH in low conductivity waters by the addition of neutral electrolytes – Cajamarca, 2020
DOI:
https://doi.org/10.51252/reacae.v2i2.592Keywords:
Low conductivity, stability, neutral electrolytes, precisionAbstract
The present investigation was developed with the objective of determining the improvement in the precision of the pH measurement in low conductivity waters by the addition of neutral electrolytes, for this, tests were carried out with deionized water for pH 3 to pH 11, at starting from the standard solutions of HCl and NaOH at 0.1 M and later adding the neutral electrolytes (KCl and NaCl), thus measuring the pH, the conductivity and the time it takes to stabilize. The study has a quantitative approach, with a correlational-experimental design. The results showed that the stability time is improved with the addition of neutral electrolytes, having a time of: 91s for 0 uS/cm, 52s for 50 uS/cm, 30s for 100 uS/cm and 21 s for 200 uS/cm. cm. In conclusion, the addition of neutral electrolytes helps decrease the stability time in pH measurement, being 200uS/cm the most effective conductivity for pH measurement.
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Copyright (c) 2023 Danny Fernando Pérez-Tucto, Yuri Lisbeth Ventura-Zuloeta , Persi Vera-Zelada
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