【Daily Question】Chemical Analysis Version 2019.10.21
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This post was last edited by zjp on 2019-10-21 at 10:04. Those who are willing to take on responsibilities in managing industry regions are invited to reply at https://bbs.hcbbs.com/thread-2776127-1-1.html; there are generous salary rewards available each month! Multiple-choice question: When titrating NaOH with HCl, methyl orange is generally chosen instead of phenolphthalein as an indicator, mainly because ( ). A. The aqueous solution of methyl orange is good; B. CO2 has little impact on the endpoint determined by methyl orange; C. The color change range of methyl orange is relatively narrow; D. Methyl orange is a dichromatic indicator. B
B. The effect of CO2 at the methyl orange endpoint is minimal
B. The effect of CO2 at the methyl orange endpoint is minimal
B. The effect of CO2 at the methyl orange endpoint is minimal