【Daily Question】Dec 9, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers

Thread Content

This post was last edited by zjp on 2015-12-11 at 11:19. 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) Which substances can be used to standardize Na2S2O3 solutions? A K2Cr2O7 (AR) B KMnO4(AR) C I2(AR) D KBrO3(AR) Correct answer: A. Reply with your answer in the comments; you will receive +2 points for participating in the quiz. If you answer all questions correctly, you’ll get an additional +3 to +8 points. Those who provide thorough analyses and explanations for the questions (or include detailed calculation processes) will receive extra points as well. 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.