EXCESS CARBON DIOXIDE EXPERIMENT OBSERVATIONS

Table # 3 Solution Color for Test Tubes Saturated with CO2 & Bromthymol Blue

Reflections.

After you have collected data, reflect on these questions.

1. Did any of these tubes go from yellow to clear or blue? What gas do you suspect replaced the CO2?






2. Tube D should remain yellow in color. Tube H should remain blue in color. Tube L should remain yellow in color. Why will this be the case for each of the tubes? Be specific.






3. Why would each of these tubes (D, L, and H) be considered a control for its group?






4. Which of the three sets of test tubes will be considered the control group? Why did you say that?






5. Did tube I clear? How long did it take? Observe tube K; has it cleared? Why do you think this happens?