Question

Using a straw to blow into the bromothymol blue solution eventually turns the solution a green color. What gas is being blown into the solution that causes it to turn green?(1 point)
Responses

oxygen
oxygen

fossil fuels
fossil fuels

carbon dioxide
carbon dioxide

nitrogen

Answer 1

The gas being blown into the bromothymol blue solution that causes it to turn green is **carbon dioxide**. When carbon dioxide dissolves in water, it forms carbonic acid, which can change the pH of the solution, leading to a color change in bromothymol blue from blue to green and eventually to yellow as the pH decreases.