【Daily Question】Jan 21, 2016: Participation +2 Wealth； +3 to 8 wealth for correct answers
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This post was last edited by zjp on 2016-1-23 at 10:39. 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 a NaOH standard solution containing Na2CO3 is standardized using methyl orange as an indicator, and this standard solution is used to titrate a certain acid with phenolphthalein as an indicator, the measured result will be ( ). A: High B: Low C: Unchanged D: Unable to determine Standard answer: A. Reply with your answer in the comments; you will receive +2 wealth points for participating in the quiz. An additional +3 to +8 wealth points will be given if all answers are correct. Extra wealth points will also be awarded if a thorough analysis and explanation of the questions or answers is provided, or if detailed calculation processes are included. If your answer is correct and your analysis/explanation 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.
The NaOH standard solution containing Na2CO3 is standardized using methyl orange as an indicator; this standard solution is then used to titrate a certain acid with phenolphthalein as an indicator, resulting in an overestimated value for A.
The NaOH standard solution containing Na2CO3 is standardized using methyl orange as an indicator, and this standard solution is then used to titrate a certain acid with phenolphthalein as an indicator; the resulting value is (a). A High B Low C Unchanged D Indeterminable
The NaOH standard solution containing Na2CO3 is standardized using methyl orange as an indicator, and this standard solution is then used to titrate a certain acid with phenolphthalein as an indicator; the resulting value is (A). A High B Low C Unchanged D Indeterminable
The NaOH standard solution containing Na2CO3 is standardized using methyl orange as an indicator, and this standard solution is then used to titrate a certain acid with phenolphthalein as an indicator; the resulting value is (A). A High B Low C Unchanged D Indeterminable