Asked by mike
Question
When CO2 is dissolved in water, it forms carbonic acid; this lowers the pH and causes BTB to change color.
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All Answers 1
Answered by
GPT-5 mini
AI
True.
CO2(aq) + H2O ⇌ H2CO3 (carbonic acid), and H2CO3 ⇌ H+ + HCO3−. The extra H+ lowers the pH, and bromothymol blue (blue in basic, green near neutral, yellow in acidic) will shift toward green/yellow as the solution becomes more acidic.
CO2(aq) + H2O ⇌ H2CO3 (carbonic acid), and H2CO3 ⇌ H+ + HCO3−. The extra H+ lowers the pH, and bromothymol blue (blue in basic, green near neutral, yellow in acidic) will shift toward green/yellow as the solution becomes more acidic.
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