Question

What happened to the bromothymol blue solution when you added carbon dioxide ? a. The bromothymol blue solution turned yellow.

b. The bromothymol blue solution turned blue.
c. The bromothymol blue solution turned green.
d. The bromothymol blue solution turned red.

Answer 1

When carbon dioxide is added to bromothymol blue, the pH indicator solution turns from blue to yellow, indicating a shift to a more acidic pH.

Step-by-step explanation:

When carbon dioxide is added to a bromothymol blue solution, the solution turns yellow. Bromothymol blue is a pH indicator that is blue in alkaline solutions and yellow in acidic solutions. Upon adding carbon dioxide (CO2), the CO2 reacts with water to form carbonic acid (H2CO3), which is an acid. This reaction lowers the pH of the solution, thus causing the bromothymol blue to undergo a color change from blue to green, and eventually to yellow as the solution becomes more acidic.

Answer 2

When carbon dioxide is added to bromothymol blue solution, it turns yellow.

Step-by-step explanation:

When carbon dioxide is added to bromothymol blue solution, it turns yellow. This is because bromothymol blue is a pH indicator that changes color based on the acidity or alkalinity of a solution. In the presence of carbon dioxide, the solution becomes more acidic and therefore turns yellow.