【Weekly Question】Participate from May 22 to May 28, 2017 for +2 wealth； +3 to +10 wealth for correct answers

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To increase the popularity of the chemical analysis section, a \"Question of the Week\" campaign has been launched to foster an active atmosphere for technical exchanges while providing rewards in the form of financial benefits to users. 【Weekly Question】Multiple-choice question: What is the electrolyte used in the microcoulombic method for determining chlorine content? A. Karl Fischer reagent B. Saturated potassium bromide solution C. 70% aqueous solution of glacial acetic acid D. Distilled water Answer: C Post your answer in the reply section; participating in the quiz earns you +2 wealth points. Getting all answers correct adds an additional +3 to +8 wealth points. Those who provide thorough analyses and explanations for the questions or answers (or include detailed calculation processes) will receive extra wealth points as a reward. If your answer is correct and your analysis is accurate, it will be marked as the best reply (or the best assistance). Feel free to answer the questions.