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What substance changes color when exposed to an acid or base?
An indicator is a substance that changes color when exposed to an acid or base.
What is the color of ethanoic acid when added to universal indicator?
When ethanoic acid is added to universal indicator, it typically turns the solution a pink to red color, indicating that it is an acidic substance.
What colorimetric pH indicator should you use for ammonia and hydrochloric acid titration?
Since the titration is between a strong acid and a weak base, methylorange should be suitable as the equivalence point is around pH 5. The K of the indicator should be equal to the pH at the end point. Methyl orange is that indicator
Which indicator would you use in the titration sulphuric acid with naoh?
In the titration of sulfuric acid with sodium hydroxide (NaOH), a pH indicator suitable for a strong acid-strong base titration, such as phenolphthalein, can be used. Phenolphthalein changes color at around pH 8.2-10, which is suitable for detecting the endpoint of the neutralization reaction between sulfuric acid and sodium hydroxide.
Is yellow acid or alkali?
Yellow is not a definitive indicator of whether a substance is an acid or an alkali. The color of a substance is not directly related to its pH or acidity levels. pH testing is required to determine if a substance is acidic or alkaline.
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 substance changes color when exposed to an acid or base?
An indicator is a substance that changes color when exposed to an acid or base.
Why is a indicator's reaction in acids and bases a chemical change?
When an indicator is added to an acid or base, it undergoes a chemical reaction with the hydrogen or hydroxide ions present in the solution. This reaction causes a change in the color of the indicator, indicating a shift in the pH of the solution. Since a new substance with different properties is formed during this reaction, it is considered a chemical change.
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.
How is a natural acid base indicator made from grapes?
The substance is the monoglucoside of malvidin.
What substance does purple cabbage indicator actually test for?
it tests for carbonic acid
What color does the indicator paper turn if the substance is a strong acid?
If you are testing with Universal Indicator or the Litmus Test it will turn red.
What indicator would be suitable for a reaction between a strong acid and a weak alkali?
Methyl Red
What is the color of ethanoic acid when added to universal indicator?
When ethanoic acid is added to universal indicator, it typically turns the solution a pink to red color, indicating that it is an acidic substance.
Does an alkali substance neutralize an acid?
no it doesn't, it simply just turns it into an indicator and has not neutralised it.
What colorimetric pH indicator should you use for ammonia and hydrochloric acid titration?
Since the titration is between a strong acid and a weak base, methylorange should be suitable as the equivalence point is around pH 5. The K of the indicator should be equal to the pH at the end point. Methyl orange is that indicator
What is the color of purple bougainvillea indicator if the substance is acid?
acidic - magenta basic - no colour change
