Question

during our fuel demonstration, we burned various substances and tried to determine what was given off/released. we used bromothymol blue to test for the presence of which molecule?
oxygen (o₂)
carbon dioxide (co₂)
water (h₂o)
light

Explanation:

Bromothymol blue is an indicator that changes color in the presence of carbon dioxide. When carbon dioxide dissolves in water, it forms carbonic acid, which lowers the pH. Bromothymol blue is blue in neutral or basic conditions and turns yellow in acidic conditions (due to the presence of carbonic acid from carbon dioxide).

Answer:

Carbon Dioxide (\(CO_2\))