【Daily Question No. 298】December 15, 2020
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【Daily Question No. 298】December 15, 2020: The acidic color of the methyl orange indicator is red. True or False ( ) Please respond within two days.
Error: PH greater than 4.4 is orange
This post was last edited by Yang Qing on 2020-12-15 at 11:03. The correct answer: Analytical laboratories use this indicator almost every day. A solution with a pH lower than 7 is considered acidic. Methyl orange changes color within the range of pH 3.1–4.4: it is red at pH below 3.1 (an acidic color), orange at pH 3.4–4.4 (a weakly acidic color), and yellow at pH above 4.4 (a slightly acidic, neutral, or alkaline color). After understanding the question properly, choose the correct option!