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Calcium hydroxide solution is used to detect the presence of carbon bi oxide. When carbon bi oxide is passed through the solution of calcium hydroxide, it turns milky white. There is formation of calcium carbonate particle. This is what was taught to me as a kid in my school.

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What is the function of bromthymol blue in CO2?

Bromthymol blue is used as an indicator to detect the presence of carbon dioxide (CO2) in a solution. It changes color in the presence of acidic conditions, which can indicate the presence of CO2 as it forms carbonic acid when dissolved in water.


Does the presence of CO2 in a solution raise or lower the pH level?

The presence of CO2 in a solution lowers the pH level.


How would you detect the presence of CO2 in a sample of air?

One common method to detect the presence of CO2 in air is using a CO2 sensor, which measures the concentration of CO2 in the air and provides a numerical output. Another approach is using colorimetric detection kits that change color in the presence of CO2. Additionally, infrared spectroscopy can also be employed for accurate detection of CO2 levels in air samples.


How does the presence of CO2 affect the lowering of pH levels in a solution?

The presence of CO2 in a solution can lower the pH levels because CO2 reacts with water to form carbonic acid, which increases the concentration of hydrogen ions in the solution, making it more acidic.


Does the presence of CO2 in a solution lead to a decrease in pH?

Yes, the presence of CO2 in a solution can lead to a decrease in pH due to the formation of carbonic acid when CO2 reacts with water. This reaction increases the concentration of hydrogen ions in the solution, lowering the pH.


Does limewater absorb CO2?

Yes, limewater (calcium hydroxide solution) reacts with CO2 in the air to form insoluble calcium carbonate, causing the limewater to turn milky or cloudy. This reaction is often used as a test for the presence of CO2.


How does the reaction between NaOH and CO2 affect the pH of a solution?

When NaOH reacts with CO2, it forms sodium carbonate and water. This reaction increases the pH of the solution because sodium carbonate is a basic compound. The presence of more basic compounds in the solution raises the pH level.


What is Bromothymol?

Bromothymol Blue is a liquid indicator that can detect presence CO2 in water. It changes color from blue to green, as it detects the presence of the CO2 . In very acidic conditions it will turn yellow. It has also been used as an indicator in the NCO (isocyanate) test (where di-n-butylamine is the base and 1N HCl solution is the acid. Green is the endpoint in this titration and yellow is "over-shot". The amine value test in resin chemistry/synthesis also may use this indicator. HCl directly titrates an amine containing resin.


What is the property of a limewater?

Limewater is a saturated aqueous solution of calcium hydroxide. It is used to detect the presence of carbon dioxide by turning milky white due to the formation of calcium carbonate. This property makes it useful in various applications such as in agriculture to test for soil acidity and in medicine to treat indigestion.


Does the pH increase with the presence of carbon dioxide (CO2)?

Yes, the pH decreases with the presence of carbon dioxide (CO2).


Is CO2 a solution suspension or a colloid?

CO2 is a colloid.


How does the presence of CO2 affect the behavior of bed bugs?

The presence of CO2 attracts bed bugs and stimulates their feeding and mating behaviors.