0
If a few drops of universal indicator is added to water changes red what pH value is it?
Wiki User
∙ 14y ago
Its Ph value is less than 7, so it is acidic. The exact colour change needs to be compared visually with a standard universal indicator chart to determine the precise Ph value associated with that particular shade of red.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is universal indicator?
It is a substance used to determine the strengths of acids and alkali.It changes color according to the pH of the material its in. It is so useful because the color also tells you how strong the substance is. As an example, if you were to put a few drops of the indicator in water it would go green. A few drops of it in cleaning products and it would go a deep purple.A universal indicator can give various colors to a huge variety of pH ranges.
What is the specific name of universal indicator?
A Universal indicator is a pH indicator composed of a solution of several compounds that exhibits several smooth colour changes over a pH value range from 1-14 to indicate the acidity or basicity of solutions. A universal indicator is typically composed of water, propan-1-ol, phenolphthalein sodium salt, sodium hydroxide, methyl red, bromothymol blue monosodium salt, and thymol blue monosodium salt.
How can you find out how acidic somethig is?
use the pH scale by adding 1 or 2 drops of universal indicator in an acid or an alkali
Why is it that 2 or 3 drops of the indicator is added during titration of acid and base?
To see where the equivalent point is
How do you make a universal indicator?
Universal indicator is an aqueous solution of many indicators: methanol, propan-1-ol, phenolphthalein sodium salt, methyl red and monosodium salts of bromothymol blue and thymolblue. Most of these have a very complicated process associated with it during its manufacture.
Metacresol purple is an indicator that changes from yellow to purple at pH 8.2. what is Ka for this indicator and it's pH range and color of the solution with pH 9.0 and few drops of Metacresol purple?
6.3x10-9
Why indicator only be used 1-2 drops only during the experiment of acid and base?
Because that is all you need; any more and it can make it harder to see some of the changes, as the substance shall end up too dark. Plus it'll just be a waste of indicator. That's what my science teacher's taught me in the past.
How much phenolphthalein indicator should be used?
A few drops of any indicator is generally enough to get a reading.
What is an acid reaction?
If you have an acid of unknown strength, you add Universal Indicator & add drops of a base. Count the drops of the base until the solution turns green (neutral) This should tell you how strong the acid is. This can also be done the other way (with a base of unknown strength & adding an acid) Does that make sense?
Why are only a few drops of indicator used in a titration?
Answer this question... dnt know
How well will the Game Boy Advance Universal Game Cases protect?
The universal game cases provide light-duty protection from drops, scratches, and dust.
What cation is present with a few drops of KSCN added to water?
bill
