Consider this chemical reaction of bromothymol blue indicator. It appears yellow in undissociated form and blue in its dissociated aqueous solution. Expand Image What will be the color of the solution if a large amount of cap h sub 2 CO sub 3 is added?

Adding a large amount of H₂CO₃ makes the solution more acidic. The added acid increases the concentration of H⁺, which favors the indicator’s undissociated form; the question states that this form is yellow. Therefore, the solution will remain yellow, not turn blue.

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