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Why did the color of the Bromthymol Blue (BTB) solution change in certain test tubes?
Wiki User
ā 8y ago
if the bromthymol blue changed back to blue from a different color that means that different atoms of another element were in the air. if you tested the bb in a test tube and say it was turned yellow and then overnight it turned back to blue-green then it would mean that a certain amount of oxygen went into the test tube to reverse the change. if there was lots of oxygen in the air then the bb would turn completely blue since bb is not really blue but a weird green color.
Wiki User
ā 10y ago
Wiki User
ā 15y agothe chemical reaction between acids and bases. also carbon dioxde
Wiki User
ā 13y agoBromothymol blue turns yellow when it is mixed with an acid of some sort.
Wiki User
ā 13y agoBromthymol blue is an indicator, which changes color in the presence of a weak acid or base.
Wiki User
ā 10y agoBecause it is a chemical change: the protonation or deprotonation of the chromophore.
Anonymous
Chemical
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How one might use bromthymol blue and phenolphthalein to test the ph of water in a swimming pool?
To test the pH of water in a swimming pool using bromthymol blue, add a few drops of the indicator to a water sample. The color change will indicate the pH level. Phenolphthalein can be used similarly; a color change to pink indicates the presence of a base (high pH). Compare the color changes obtained from both indicators to assess the pH level accurately.
Heating causes a bromthymol blue indicator solution to change yellow to blue rapidly why?
Heating the solution increases the kinetic energy of the molecules, leading to faster movement and collision. This increased collision rate leads to a faster reaction between the indicator and any substances present that cause the color change from yellow to blue.
What might cause bromthymol blue to turn murky green?
Bromothymol blue is a pH indicator that turns green in neutral solutions. If the solution becomes more acidic or basic, it can cause the color to shift towards yellow or blue, respectively. Contaminants or impurities in the solution can also affect the color change.
Why the color of benedicts solution change when heated?
The color change in Benedict's solution when heated is due to the reduction of copper ions in the solution. Initially, the blue-colored Cu(II) ions in Benedict's solution are reduced to form a reddish-brown precipitate of Cu(I) oxide. This color change indicates the presence of reducing sugars in the solution.
How can you determine gasses present in solution using the expermints with BTB?
Bromothymol blue (BTB) can change color in the presence of carbon dioxide or acidic solutions, turning from blue to yellow. By observing the color change in a solution with BTB added, you can determine the presence of carbon dioxide or acidity levels, which can help identify certain gases like carbon dioxide in the solution.
What color is bromthymol blue when in a base?
Bromthymol blue is blue in a basic solution.
What color is the bromthymol blue solution before and after you exhaled into it?
The color of the bromthymol blue solution or blue btb is yellow after you exhaled into it..:)
When mixed with a drop of bromthymol blue what will cause the indicator to turn from blue to yellow?
An acidic solution will cause bromthymol blue to turn from blue to yellow. This color change occurs due to a change in the pH of the solution, with acidic conditions resulting in the indicator changing to a yellow color.
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.
How one might use bromthymol blue and phenolphthalein to test the ph of water in a swimming pool?
To test the pH of water in a swimming pool using bromthymol blue, add a few drops of the indicator to a water sample. The color change will indicate the pH level. Phenolphthalein can be used similarly; a color change to pink indicates the presence of a base (high pH). Compare the color changes obtained from both indicators to assess the pH level accurately.
What are indicators in acid-base reactions?
Indicators change color based on the pH of the solution. You want to pick an indicator with a similar pKa (acid-dissociation constant) as the pH at which the reaction becomes what you desire it to be. Examples include phenolphthalein, bromthymol blue, and phenol red.
Can reagent bromthymol blue or phenolphthalein could be considered to be an acid indicator?
Phenolphthalein is typically used as a base indicator as it changes color in the presence of bases. Bromthymol blue can be used as both an acid and a base indicator, with different color changes for each.
Heating causes a bromthymol blue indicator solution to change yellow to blue rapidly why?
Heating the solution increases the kinetic energy of the molecules, leading to faster movement and collision. This increased collision rate leads to a faster reaction between the indicator and any substances present that cause the color change from yellow to blue.
What might cause bromthymol blue to turn murky green?
Bromothymol blue is a pH indicator that turns green in neutral solutions. If the solution becomes more acidic or basic, it can cause the color to shift towards yellow or blue, respectively. Contaminants or impurities in the solution can also affect the color change.
Why the color of benedicts solution change when heated?
The color change in Benedict's solution when heated is due to the reduction of copper ions in the solution. Initially, the blue-colored Cu(II) ions in Benedict's solution are reduced to form a reddish-brown precipitate of Cu(I) oxide. This color change indicates the presence of reducing sugars in the solution.
A change in what property permit certains materials to act as indicators?
A change in color properties allows certain materials to act as indicators. For example, pH indicators change color in response to the acidity or alkalinity of a solution, making them useful tools for determining the pH level of a substance.
What happens after dipping a substance into a pH solution?
When a substance is dipped into a pH solution, it will either change color due to a chemical reaction with the solution, or it may not show any visible change if the substance is neutral. This process helps determine the acidity or basicity of the substance based on the pH solution's color change.
