What does bromothymol blue indicate during photosynthesis?

What does bromothymol blue indicate during photosynthesis?

The carbon dioxide can be used by organisms through photosynthesis, removing it from the atmosphere. Bromothymol blue (BMB) is an indicator dye that turns yellow in the presence of acid. When carbon dioxide is added to the solution, it creates carbonic acid, lowering the pH of the solution.

Why do we use BTB in a lab experiment?

BTB is an acid indicator; when it reacts with acid it turns from blue to yellow. When carbon dioxide reacts with water, a weak acid (carbonic acid) is formed (see chemical reaction below). The more carbon dioxide you breathe into the BTB solution, the faster it will change color to yellow.

Why does BTB change from blue to green?

BTB is a weak acid and it is almost red in color. However, when it reacts with acidic solution then it turns into yellow color and blue color after reacting with alkaline solution. At neutral pH (7.0) it shows bluish green color.

What color does BTB turn in the light?

The BTB turned yellow because of the carbon dioxide. Both plants are doing cellular respiration, and by doing that they are producing carbon dioxide. The plant in light is using the CO2 to do photosynthesis, but the plant in dark isn’t doing photosynthesis and storing up CO2 which turns the BTB yellow.

What do the colors of BTB indicate?

Bromthymol blue is a weak acid. It can be in acid or base form, depending on the pH of the solution. This reagent is yellow in acidic solutions, blue in basic solutions and green in neutral solution.

What color does BTB turn when CO2 is added?

‘Bromothymol blue (BTB) is a pH indicator that turns yellow in the presence of high levels of carbon dioxide (CO) in water.

What color does BTB turn when co2 is added?

What color would BTB turn if it is added to pure water?

Because the pH of distilled water is less than 7, the color of the resulting solution may be green or even yellow-green. Green BTB will work just fine in the investigations, but you can also add a base to increase the pH to make a blue color. You will need to add a dilute strong base.

What does it mean if the plant in the dark is still in BTB that is yellow?

What does it mean if the plant in the dark is still in BTB that is yellow? That the plant did not make much oxygen.

What color is BTB When there is more carbon dioxide present?

BTB turns yellow in the presence of CO2.

What does it mean when BTB is green?

Bromothymol blue solution BTB can indicate the presence of carbon dioxide in the water. When little or no carbon dioxide is present BTB will show a blue color. Depending upon the amount of carbon dioxide BTB will change to green or yellow. Yellow indicates more carbon dioxide.

What happens to BTB in dark?

In the dark, an elodea plant will turn a bromothymol blue solution yellow as it produces carbon dioxide as a product of respiration. An elodea plant exposed to light will turn yellow bromothymol blue back to the blue color as it uses carbon dioxide.

What will happen to yellow BTB solution if co2 is removed from it?

Sunlight, carbon dioxide, and water react to form the sugars that plants use for metabolism. As carbon dioxide is removed from the solution through photosynthesis, the solution will become more basic and change from yellow to dark green and then to blue.

Which process does the plant go through in light that turns the BTB blue?

photosynthesis
investigation? In test tube A, the plant went through photosynthesis in the light and used the carbon dioxide to change it to oxygen so the BTB turned from yellow to blue.

What color does the BTB solution turn when carbon dioxide is present?

yellow
BTB (Bromothymol Blue) is a blue solution. It turns yellow in the presence of carbon dioxide.

What would you conclude if the color of the bromothymol blue solution changed in your control tube?

Why did the color of the Bromthymol Blue (BTB) solution change in certain test tubes? The levels of carbon dioxide changed, therefore the BTB solution changed color to indicate the presence of carbon dioxide.

When BTB turns yellow it is because CO2 has entered it?

Bromothymol blue (BTB) is a chemical that turns yellow in the presence of carbon dioxide. In the presence of oxygen, BTB stays blue. In his science class, Sanjay used BTB to test for the presence of those two gases in three situations. Sanjay labeled three small jars A, B, and C.