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Bromothymol blue is blue in a solution with a pH over 7,6.

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9y ago

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Why did btb solution in jar c stay blue?

The BTB (bromothymol blue) solution in jar C likely stayed blue because the pH of the solution remained neutral or alkaline, which is indicated by a blue color. This can occur if there was no significant carbon dioxide (CO2) present to lower the pH, or if the environment was not conducive to acid production, such as in a sealed or less active system. Thus, the lack of acidic conditions prevented the BTB from transitioning to yellow, which signifies acidity.


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