Topic: Universal Indicators
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How is universal indicator made?
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 ... Read More »
Source: http://wiki.answers.com/Q/How_is_universal_indicator_made
What is universal indicator?
It is a substance used to determine the strengths of acids and alkalis. It changes colour according to the pH of the material its in. It is so useful because the colour also tells you how strong the substance is. Eg, if youwere to put a few... Read More »
Source: http://wiki.answers.com/Q/Which_is_the_universal_indicator
Why it is called universal indicator?
why universal indicator is called universal indicator? Read More »
Source: http://wiki.answers.com/Q/What_is_universal_indicator_and_why_it_...
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Universal Indicators
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Answers to Other Common Questions
The spectra of Cepheid variables, which are found in all galaxies, are red-shifted. This is an optical effect that indicates they are moving rapidly away from Earth and from the center of the known universe.
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Source: http://wiki.answers.com/Q/What_indicates_that_the_universe_is_exp...
Answer A universal indicator indicates the pH of a substance in a more complex way than most pH indicators. Instead of changing colors if the pH of a substance it is exposed to is above or below a certain pH point, a universal indicator cha...
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Source: http://wiki.answers.com/Q/What_is_indicator_made_of
a mixture of pH indicators
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The universal Indicator was invented in 1923 by Yamada
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Source: http://wiki.answers.com/Q/When_was_universal_indicator_invented
Water is the main neutral* solution. The colour would be green and is 7 on the pH scale.** *Neutral - A term indicating that a substance is neither acidic nor alkaline. (pH7) ** pH Scale - scale which usually runs from 0 to 14 and measures ...
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Source: http://wiki.answers.com/Q/What_colour_is_universal_indicator_in_w...
it reacts with water
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Source: http://wiki.answers.com/Q/How_do_universal_indicators_work
