If snails use lungs to breathe, you can conclude that they release which gas into their environment as a result of respiration? What would you conclude if the color of the solution in the control changed? 4. What is bromothymol blue an indicator for? The color will change to green but remain this color for the rest of the experiment in the non-germinating beakers (unsoaked) and the beakers without beans.
The control allowed me to have a point of reference in which no change should have occurred. (b) If we titrate an acidic solution with NaOH, calculate the approximate pH at which the indicator color change first becomes visible. Bromothymol blue is a compound that tests the pH using color changes. 2. What was the importance of the control in your experiment? Why or why not? 4. When you began the experiment, was there CO 2 in the water? D. HCl + blue dye G1 The reaction turned green. Why do we have a control? Cellular respiration. How did the color of the bromothymol blue solution in each beaker change over time in each condition? Did you see a color change in the bromthymol blue solution in either test tube after someone in your group had breathed into it? Bromothymol blue is an indicator with Ka = 1.0x10^-7. When you boiled it, the solution became basic because you formed H2O and CO2. It is yellow in its Hln forn and blue in its In^- (a) It we add a few drops of bromothymol blue to a solution with a pH = 1.00, what color will the solution have? 3. It changes to yellow in acidic conditions. 5. Identify and explain the control in this experiment.

5. What substance caused this change? I read the pH indicator wikipedia page, but I honestly have no idea what it is talking about. What was the color of the bromthymol blue solution before you exhaled into it? Turned greenish. 4. It only states that it changes color in the presence of acids and bases, and not why. Did you see a change in the color of the bromothymol blue test tube wrapped in Aluminum foil? Why did …
When Bromothymol Blue reacts with an acid, it turned orange, and when it reacts with a base, the end result is blue. Question: QUESTION 5 In Experiment 2, What Did The Color Change Of Bromothymol Blue (from Blue To Green To Yellow) Indicate?

What does the color change in bromothymol blue in the white light indicate in terms of the Elodea/ plant? The solution color will change from blue to green to yellow in the beakers with germinating beans (soaked). 1. Bromothymol blue is yellow in acidic solutions and blue in basic solutions. In the test tubes that contained Elodea, where did the CO 2 go? After 2. As seen in Graph 1 there is not much data because the averages of all of the trials were taken which was only four points and they had weak correlation, so a … Green in the test tube means a low carbon dioxide presence.

Why did we use BTB in this experiment? Bromthymol blue is an indicator, which changes color in the presence of a weak acid or base. Bromothymol blue is an indicator that changes color when carbon dioxide is present. 3. What process in cells is this substance released? bromothymol blue is an acid base indicator, It is yellow in acidic solution and blue in basic solution . Why was Elodea placed in both experimental flasks? Show calculations to prove your answer.

added the Bromothymol Blue indicator, it turned an orange-like color C. NH3 + BTB E1 The reaction turned dark blue. What differences did you observe between the Elodea in the light and the Elodea in the dark? It is made in a basic solution, so it starts out as blue , thus the name 'blue'. This change was indicated by bromothymol blue, seeing that the substance reverted from a green color to its yellow acidic state. The wikipedia page for bromothymol blue does not explain why it changes color. The levels of carbon dioxide changed, the plant was giving off oxygen 3. Exhaled test tube caused color change.