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its red in color
Wiki User
∙ 12y ago
Indigo carmine turns yellow in an acidic environment due to a change in the pH of the solution. In acidic conditions, the color of indigo carmine shifts from blue to yellow. Adding an acid causes the pH to decrease, leading to the color change.
Wiki User
∙ 10y agobase
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What is a substance that changes color when mixed with an acid or base?
An example of a substance that changes color when mixed with an acid or base is litmus paper. Litmus paper is typically blue in color and turns red in the presence of an acid and blue in the presence of a base.
Aerobic organisms degrade glucose producing carbon dioxide and water What acid turns the indicator yellow?
The acid that turns the indicator yellow in this scenario is carbonic acid, which is formed when carbon dioxide reacts with water. It causes the indicator to change color due to a decrease in pH levels.
Why the colour of sulphuric acid is yellow?
The yellow color of concentrated sulfuric acid is due to the presence of sulfur-containing impurities in the acid, such as sulfur dioxide and organic compounds. These impurities absorb light at certain wavelengths, giving the acid a yellow appearance. Pure sulfuric acid is colorless.
What color is phenol red at an acid pH?
Phenol red is yellow at an acid pH.
Phenol red turns what color when carbon dioxide is added?
Phenol red turns yellow in the presence of carbon dioxide due to the formation of carbonic acid. This acidic environment causes the phenol red indicator to shift from its original red color to a yellow hue.
What is acetocarmine?
Acetocarmine is acetic acid as solvent with dissolved carmine
What are the special stains for glycogen?
periodic acid schiff best's carmine PAS_D
What is a substance that changes color when mixed with an acid or base?
An example of a substance that changes color when mixed with an acid or base is litmus paper. Litmus paper is typically blue in color and turns red in the presence of an acid and blue in the presence of a base.
Aerobic organisms degrade glucose producing carbon dioxide and water What acid turns the indicator yellow?
The acid that turns the indicator yellow in this scenario is carbonic acid, which is formed when carbon dioxide reacts with water. It causes the indicator to change color due to a decrease in pH levels.
How do you obtain Carmine?
Obtained from the harmonic acid produced by some scaled insects, such as the cochineal and the Polish Cochineal.
What color is phenol red at an acid pH?
Phenol red is yellow at an acid pH.
Why the colour of sulphuric acid is yellow?
The yellow color of concentrated sulfuric acid is due to the presence of sulfur-containing impurities in the acid, such as sulfur dioxide and organic compounds. These impurities absorb light at certain wavelengths, giving the acid a yellow appearance. Pure sulfuric acid is colorless.
Why does adding carbon dioxide to BTB solution cause a color change?
Adding carbon dioxide to bromothymol blue (BTB) solution causes a color change because it forms carbonic acid, which lowers the pH of the solution. BTB changes color in response to pH changes, shifting from blue in a basic solution to yellow in an acidic solution. The increased acidity due to the carbon dioxide causes the solution to turn yellow.
Why amino acids give yellow colour with nitric acid?
When amino acids react with nitric acid, a yellow color may be observed due to the formation of nitro compounds. Nitric acid can nitrate amino acids, leading to the production of yellow-colored nitro derivatives. The specific yellow color observed can vary depending on the amino acid present and the reaction conditions.
What acid causes muscles to ache produced by milk?
Lactic acid causes muscles to ache
What color indicate positive mannitol test?
A yellow color indicates a positive mannitol test. This means that the organism can ferment mannitol, producing acid which causes the phenol red indicator to turn yellow.
Phenol red turns what color when carbon dioxide is added?
Phenol red turns yellow in the presence of carbon dioxide due to the formation of carbonic acid. This acidic environment causes the phenol red indicator to shift from its original red color to a yellow hue.
