【Daily Question】2018.7.31
Thread Content
Multiple-choice question: If a pH meter can locate and measure, but reaches the equilibrium point slowly, this may be caused by the following reasons ( ). A Aging of the glass electrode; B The saturated potassium chloride solution inside the calomel electrode does not fill the electrode completely; C The glass electrode has been left dry for too long; D There is a broken wire inside the electrode. ABC
A: Aging of the glass electrode. B: The saturated potassium chloride solution inside the calomel electrode does not fill the electrode completely. C: The glass electrode has been left dry for too long