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Ernesto Garcia
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∙ 8y agoThe Iodine test is used to test for the presence of starch. Iodine solution is iodine dissolved
in an aqueous solution of potassium iodide. It reacts with the starch, producing a purple-black color.
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∙ 9y agoLugol's Iodine, a starch indicator solution, can be used to determine if the starch has diffused through the membrane. If the indicator comes in contact with starch it will turn black.
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∙ 13y agoLugol's Iodine is used to detect starch in a solution.
Benedict's is used to detect simple sugars (glucose) in a solution.
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∙ 13y agoIodine-iodide complex ( I3-) makes a lose connection with the starch molecule, somewhere in its helical-twisted macro configuration, giving it (or itself) a deep purple to black color.
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∙ 12y agoIf its black. That's how we did it in my class.
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∙ 8y agoIodine is used to test starch. Iodine turns into blue in the presence of starch.
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∙ 12y agoIodine solution, my friend! :]
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∙ 10y agoUse your common sense, noob!
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∙ 12y agoIodine
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Situation where you might use the iodine colorimetric test?
You can use idodine to identify starches in substances.
When do you use methyl red instead of phenol red?
You use methyl red as a ph indicator for for the MRVP test.
What test can you know if it is a acid or base?
use a universal indicator or add an acid to see the results
What kind of indicators are used in precipitation titration?
An example of an indicator would be Phenol Red, or Universal Indicator. Depending on the pH range of the indicator and the pH range of the substrates you would use the appropriate indicator.
Instead of red cabbage what other substance can be used in an indicator test that would change colour?
You can use Red Onion but it doesn't work as well as cabbage. (but of course it does stink)Hope this helps
Situation where you might use the iodine colorimetric test?
You can use idodine to identify starches in substances.
What liquid do you use to test the pH scale?
You use Universal Indicator solution.
What would an organism use for energy in test tube during fermentation and what color would the indicator be.?
Sugar is the energy source, the definition of fermentation is: The anaerobic conversion of sugar to carbon dioxide and alcohol by yeast. As to the color of the indicator it would depend on what you were using to test and what you were testing for (sugar, Co2, alcohol).
What substance is used to determine the presence of an acid or base?
by using an indicator like litmus paper!!!
What is a litmus paper and how to use it?
A litmus paper is a indicator that is used to test for acids or bases
When do you use methyl red instead of phenol red?
You use methyl red as a ph indicator for for the MRVP test.
How do you test of acids an bases?
using an universal indicator, or you can use litmus paper or a pH meter.
What test can you know if it is a acid or base?
use a universal indicator or add an acid to see the results
What kind of indicators are used in precipitation titration?
An example of an indicator would be Phenol Red, or Universal Indicator. Depending on the pH range of the indicator and the pH range of the substrates you would use the appropriate indicator.
Why was universal indicator paper used to test the pH rather than placing universal indicator solution into the mixture?
Use of paper avoid the contamination of the sample.
Is it advisable to use just one type of indicator to determine the nature of an unknown solution?
No; every test must be confirmed by another test.
What type of indicator should be used to determine the pH of an opaque substance?
Indicators would work to determine the pH of colored substances. The color change may be difficult to read depending on the indicator used. Another alternative to adding a indicator to the substance would be to use a test strip.
