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BTB indicator can indicate if a substance contains CO2.
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What is btb used for?
BTB is and indicator that indicates if a weak acid is present, such as CO2. The BTB is blue when none is present and it will turn yellow when a weak acid is present.
Which indicator is pale blue in plain water and turns yellow in the presence of an acid?
Bromothymol blue, also known as BTB.
If you add indicator to an alkaline solution what will happen?
It depends on what indicator you use. An alkaline solution will have a pH-value >7. So if you're using BTB, it'll be blue. If you're using Fenolftalein, then it'll be pink.
What is the color of BTB solution after you exhaled into it?
It turns yellow after we exhaled into the btb solution..:)
How do you prepare thymol blue indicator?
Bromothymol Blue (BTB)Bromothymol blue is an indicator, a substance that changes color as the pH of a solution changes. Bromothymol blue is yellow in acidic solutions and blue in basic solutions.BTB can be prepared by mixing 0.1 g (a pinch) of bromothymol blue powder in 10 mL of a 4% solution of sodium hydroxide.Add 20 mL of alcohol and dilute to 1 L with distilled water.The solution should be deep blue.If it is green, add sodium hydroxide solution drop by drop until the solution turns blue.Bromothymol blue can be purchased from scientific supply houses.CAUTION: Sodium hydroxide is corrosive; the BTB solution should be prepared in a laboratory. BTB stains hands and clothes. Have students wear goggles and follow safety precautions when using BTB solution.
How does soda effect BTB?
Soda effects BTB when you add it to the BTB. Soda has carbon dioxide in it, which makes it foamy. BTB is used as an indicator of chemicals with a weak acid and base. When you add the carbon dioxide it will change into a green like color.
What is btb used for?
BTB is and indicator that indicates if a weak acid is present, such as CO2. The BTB is blue when none is present and it will turn yellow when a weak acid is present.
Which indicator is pale blue in plain water and turns yellow in the presence of an acid?
Bromothymol blue, also known as BTB.
Why does adding carbon dioxide to BTB solution cause a color change?
BTB is an acid indicator. by adding carbon dioxide to the solution, it will turn into carbonic acid (a weak acid) turns green in low concentration and yellow in high concentration.
What is BTB solution used for?
BTB solution or bromothymol blue solution is an indicator for CO₂ turning a light green or yellow (extreme) depending on the amount of CO₂ indicated. As an student from a school that has recently done this experiment I can verify this information
If you add indicator to an alkaline solution what will happen?
It depends on what indicator you use. An alkaline solution will have a pH-value >7. So if you're using BTB, it'll be blue. If you're using Fenolftalein, then it'll be pink.
