Student groups are given an unknown liquid to test using the four indicators. One group conducts the tests and records these results. Color Changes - pH Indicators Indicator Used Color Produced Methyl violet Bluish Bromophenol blue Yellow Phenolphthalein Colorless Thymolphthalein Colorless Using the table of indicator values, determine the approximate pH of the unknown solution. A) 1.6 B) >3.0 C) between 0 and 1.6 D) between 1.6 and 3.0

Question

Nancy Combs

Physics

13 July, 02:47

Student groups are given an unknown liquid to test using the four indicators. One group conducts the tests and records these results. Color Changes - pH Indicators Indicator Used Color Produced Methyl violet Bluish Bromophenol blue Yellow Phenolphthalein Colorless Thymolphthalein Colorless Using the table of indicator values, determine the approximate pH of the unknown solution. A) 1.6 B) >3.0 C) between 0 and 1.6 D) between 1.6 and 3.0

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Answers (2)

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Julia Bishop · Answer 1

d

Explanation:

between 1.6 and 3.0 The methyl violet test falls in the transition range while the bromophenol test, with a yellow color, would fall below that transition range. The last two indicators are colorless; the unknown must be an acid and you can narrow the pH range to 1.6 and 3.0.

Kylee Sherman · Answer 2

The answer is (d) I promise i'm not lying I just checked on my test

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