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Presence of what??? Turn in what? it depends. The colors vary. Green is neutral. The more acidic a substance is the more red it becomes, but between the green and red are colors like pink, orange, yellow but red means most acidic. If its a base it starts to turn blue and the more alkaline it has begins to turn purple.
What else can I help you with?
If phenolphthalein is added to HBr?
If phenolphthalein is added to HBr (hydrobromic acid), which is a strong acid, the phenolphthalein indicator will remain colorless because it only changes color in the presence of a base. Since HBr is an acid, it will not cause the indicator to change color.
Does hydrogen carbonate indicator shows any color with oxygen?
No, hydrogen carbonate indicator does not change color when exposed to oxygen. It is mainly used to detect the presence of carbon dioxide, as it turns pink in the presence of an acid (carbon dioxide dissolved in water forms carbonic acid).
What will change color in the presence of an acid or a base?
pH indicators change the color depending upon acidity or basicity.
What is chemical indicator dye?
Chemical indicator dye is a substance that changes color in the presence of a specific chemical or changes in pH. It is commonly used in laboratories to visually indicate the presence or absence of certain substances in a solution.
What is acid base indicator?
An acid base indicator is a chemical substance that has the ability to change color depending on the pH.
What will an indicator do in the presence of an acid or base?
This indicator changes his color.
What are substances which exhibit a specific color in the presence of acid or base?
an indicator
What is the colour with universal indicator hydrochloride acid in stomach?
Universal indicator changes color to red in the presence of hydrochloric acid in the stomach, indicating a low pH.
If phenolphthalein is added to HBr?
If phenolphthalein is added to HBr (hydrobromic acid), which is a strong acid, the phenolphthalein indicator will remain colorless because it only changes color in the presence of a base. Since HBr is an acid, it will not cause the indicator to change color.
A substance such as litmus that signals the presence of something?
An indicator is a substance that changes color in response to the presence of specific substances in a solution. Litmus is a common indicator that changes from blue to red in the presence of an acid and from red to blue in the presence of a base. This color change helps to identify the nature of the solution being tested.
What is recreation of indicator with acid and base?
Recreation of an indicator using an acid and a base involves mixing a colorless or faintly colored acid-base indicator with an acid to make the solution acidic (and change color) and then adding a base to neutralize the acid and return the indicator to its original color. This process demonstrates the reversible nature of acid-base indicators and how they can be used to visually indicate the presence of acids or bases in a solution.
Does hydrogen carbonate indicator shows any color with oxygen?
No, hydrogen carbonate indicator does not change color when exposed to oxygen. It is mainly used to detect the presence of carbon dioxide, as it turns pink in the presence of an acid (carbon dioxide dissolved in water forms carbonic acid).
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.
What will change color in the presence of an acid or a base?
pH indicators change the color depending upon acidity or basicity.
What are some indicators?
Indicators are chemicals that change color in the presence of an acid or a base. The most commonly used indicator is phenophthalein.
What do acids and base do in the presence of indicator?
This depends on the indicator : Solution of red cabbage, or rose flower, strawberry, or cherry.These turn lighter(yellowish) in the presence of an acid, and more darker(violet) in the presence of a base. -Phenolphtaline : Remains colour-less in the presence of an acid, and violet in the presence of a base. -Red/Blue Litmus Paper : the RLP turns blue in the presence of a base, and the BLP turns red in the presence of an acid. changes color
What colour changes when red cabbage indicator is added to acid solutions?
When red cabbage indicator is added to acid solutions, it changes to a reddish-pink color. This change occurs due to the presence of anthocyanins in the cabbage, which react with the hydrogen ions in the acid, resulting in a shift in color. In contrast, in basic solutions, the indicator turns green or blue.
