Question 3 of 5
2 Points
The pH indicator bromothymol blue is blue in an alkaline soluti...
Question 3 of 5
2 Points
The pH indicator bromothymol blue is blue in an alkaline solution and yellow
in an acidic solution. A slight increase in acidity, such as when CO2 gas is
added, causes a solution with the indicator to change from blue to yellow.
A solution with the indicator would be most likely to turn from yellow to blue
when which combination of factors exists?
A. A person blows air into the solution through a straw.
B. Algae are placed in the solution and left in a dark room.
C. Yeast cells and sugar are placed in the solution.
D. Water plants in the solution are placed under a bright lamp.
Answers: 3
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