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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
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∙ 11y ago
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Will acids turn phenolphthalene indicator pink?
No, phenolphthalein turns colourless when it comes into contact with an acid. It only turns magenta with a base (alkali)
Do acids or base react with an indicator?
They both react, but and acid will create a low pH (1,2,3), and the color will turn red or orange. A base will have a high pH (11,12,13) and the color will be blue or green. edit: yes they do react. if it is an acid it has a pH of 1-6, 7 is neutral and a pH of 8-13 is a base. Presence of acids and bases can lead to protonation / deprotonation of the indicator molecule, which changes its colour
What word describes chemicals which change colour in acids and alkalis?
acid-base indicators for all pHs: universal indicator for pH testing in general: indicator
An indicator does which one of the following in the presence of acids and bases?
Indicators can be used to determine if a substance is a acid or a base because of the reaction that occurs between the substance and the indicator. This creates a color change in the indicator (depending on which indicator you use). If it is a universal indicator, the substance may change from deep red to violet. If it is a litmus indicator, it will only turn either red or blue.
Can universal indicator be used to determine the strength of acids and bases?
No, it can only show whether the substance is an acid or a base.
What will an indicator do in the presence of an acid or base?
This indicator changes his color.
Will acids turn phenolphthalene indicator pink?
No, phenolphthalein turns colourless when it comes into contact with an acid. It only turns magenta with a base (alkali)
Do acids or base react with an indicator?
They both react, but and acid will create a low pH (1,2,3), and the color will turn red or orange. A base will have a high pH (11,12,13) and the color will be blue or green. edit: yes they do react. if it is an acid it has a pH of 1-6, 7 is neutral and a pH of 8-13 is a base. Presence of acids and bases can lead to protonation / deprotonation of the indicator molecule, which changes its colour
What are substances which exhibit a specific color in the presence of acid or base?
an indicator
What is an indicator as related to an acid and a base?
It is a substance(chemical or natural) which changes colour in the presence of an acid or base.
What word describes chemicals which change colour in acids and alkalis?
acid-base indicators for all pHs: universal indicator for pH testing in general: indicator
How do you test if somethings is acids?
The presence of acid can be detected by using an indicator such as litmus paper. Litmus paper turns blue litmus to red.
Why does yellow curry stain on a white shirt turns red when it is washed with soap?
the curry contains turmeric contents(an indicator of acids/bases) which in turn turns to reddish brown to indicate the presence of base in the soap.hence proved..hehe!!...:D
An indicator does which one of the following in the presence of acids and bases?
Indicators can be used to determine if a substance is a acid or a base because of the reaction that occurs between the substance and the indicator. This creates a color change in the indicator (depending on which indicator you use). If it is a universal indicator, the substance may change from deep red to violet. If it is a litmus indicator, it will only turn either red or blue.
Can universal indicator be used to determine the strength of acids and bases?
No, it can only show whether the substance is an acid or a base.
How can acids and bases identified?
for one never taste it but, you will need an acid-base indicator to identify it...you can thank me later
What is used to determine the presence of acids and bases by a change in color?
Acid-base indicators are used for this purpose.
