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SOLVED: Phenol red is another indicator commonly used to detect thepresence of acid. This indicator is red above pH7 and yellow belowpH of 7. What would be the appearance of
VIDEO ANSWER: If phenol red is used as the indicator, instead of a neutral red, the appearance of the bacteria on the agar will depend on the pH change due to …
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Phenol red indicator changes from yellow to red in the pH range... | Filo
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SOLVED: How will the results of the phenol red sugar fermentation tests be affected if Methyl red is used as a pH indicator instead of phenol red? a. There will be more false negative results because methyl red is more sensitive to pH change than phenol red. b. There will be more false negative results because methyl red is less sensitive to pH change than phenol red. c. There will be more false positive results because methyl red is less sensitive to pH change than phenol red. d. There will be
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SOLVED: How will the results of the phenol red sugar fermentation tests be affected if Methyl red is used as a pH indicator instead of phenol red? a. There will be more false negative results because methyl red is more sensitive to pH change than phenol red. b. There will be more false negative results because methyl red is less sensitive to pH change than phenol red. c. There will be more false positive results because methyl red is less sensitive to pH change than phenol red. d. There will be
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SOLVED: Phenol red indicator changes from yellow to red in the pH range from 6.6 to 8.0. State what color the indicator will assume in the following solution: 0.1 M NaCl.a. The indicator is its original color.b. Red.c. Yellow.d. There is not enough information to answer this question.
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36. Would simply adding a pH indicator like phenol red to a general-purpose medium, such as nutrient agar, result in a medium that is selective, differential, both, or neither? Why or why not? (2 pts.)
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SOLVED:An unknown solution is colorless when tested with phenolphthalein but causes the indicator phenol red to turn red. Use this information to find the approximate pH of this solution.
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