【Daily Question】Chemical Analysis Version, 2020.7.24
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Multiple-choice question: When using a pH glass electrode, it must be soaked for about 24 hours. What is the purpose of this? A. Eliminate the two diffusion potentials between the internal and external hydrated gel layers and the dry glass layer ； B. Reduce the interphase potential E between the glass film and the test solution ； C. Reduce the interphase potential E between the glass membrane and the internal reference solution ； D. Reduce the asymmetric potential to bring it toward a stable value ； D
D. Reduce the asymmetric potential to bring it toward a stable value