【Daily Question】January 4, 2016: Participation +2 Wealth； +3 to 8 wealth for correct answers

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This post was last edited by zjp on 2016-1-6 at 08:15. To increase the popularity of the chemical analysis section, a \"One Question per Day\" campaign has been launched; this aims to foster active technical exchanges while also providing financial rewards to users. 【Daily Question】 (Single-choice question) When using acid-base titration to determine the acetic acid content in industrial acetic acid, which indicator should be selected? A Phthalein B Methyl orange C Methyl red D Methyl red-methylene blue. Correct answer: A. Post your answer in the replies; participating in the quiz earns you +2 wealth points. Getting all answers correct adds another +3 to +8 wealth points. Those who provide thorough analyses and explanations for the questions or answers (or include detailed calculation processes) will receive additional 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. Note: We will close this post after 24 hours, and at that time we will announce the best reply (the best assistance), as well as the answer and explanation.