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What chemical indicator do you use for starch?
Starch is not the indicator. Iodine is the indicator of starch.
Why is a back titration sometimes used for an analysis rather than a direct titration?
Back titrations are used when a reaction occurring in the conical flask can not be detected using an indicator such as phenolphthalein. So, after this titration has been performed, the 'excess' is then titrated with something that can be detected more easily using phenolphthalein etc.
What is the chemical indicator used to test protein?
To test for protein. Biuret or solutions of sodium hydroxide and copper sulfate. Tested with a dropper a + result will be purple or something
What indicator should be used to see maltose?
To detect maltose, you can use the Benedict's test. Benedict's reagent will change from blue to red or yellow in the presence of reducing sugars like maltose.
What reagent is used for measuring PH?
Electronic pH probes and universal indicator solution/paper are the two main ways of finding numerical pHs.To find find whether a substance simply has a pH greater or less than neutral pH 7, indicators like methyl orange and phenolphthalein can be used.Google search images to find out what colours they go.
Why is a small amount of indicator added during titration?
An indicator shows when we have added just enough of the second reagent to react with the first. If you mean why do we add only a small amount of indicator, it is to keep the answer accurate. Some of the reagent is used changing the indicator so the answer is always slightly bigger than perfection, and the more indicator you add, the larger the error.
What is Patton and reeder's reagent?
Patton and Reeder's reagent is a stain used in histology for the identification of lipids. It is a mixture of osmium tetroxide and potassium dichromate. When tissues are stained with Patton and Reeder's reagent, lipids appear black or dark brown in color under a microscope.
What compounds other than a-napthol can be used as a reagent for the test?
Other compounds that can be used as a reagent for the test include resorcinol, phenolphthalein, and 4-nitrophenol. These compounds can react with aldehydes to form colored products, making them useful for qualitative tests for the presence of aldehydes.
What chemical indicator do you use for starch?
Starch is not the indicator. Iodine is the indicator of starch.
Why is a back titration sometimes used for an analysis rather than a direct titration?
Back titrations are used when a reaction occurring in the conical flask can not be detected using an indicator such as phenolphthalein. So, after this titration has been performed, the 'excess' is then titrated with something that can be detected more easily using phenolphthalein etc.
What is the chemical indicator used to test protein?
To test for protein. Biuret or solutions of sodium hydroxide and copper sulfate. Tested with a dropper a + result will be purple or something
What is the purpose of the NaNO2 when preparing the Pauly reagent?
In the presence of sodium nitrite and hydrochloric acid, sulfanilc acid form a diazonium salt. This salt react with and is an indicator for thyrosine, histidine.
Does biuret reagent corrosive and poison?
Biuret reagent is not considered corrosive, and it is not typically poisonous if used as directed. However, it is always important to handle chemicals with caution and follow safety protocols to minimize any potential risks.
What is a reagent strip?
The reagent strip is a strip of paper impregnated with a specific chemical reagent for a chemical determination.
What indicator should be used to see maltose?
To detect maltose, you can use the Benedict's test. Benedict's reagent will change from blue to red or yellow in the presence of reducing sugars like maltose.
What reagent is used for measuring PH?
Electronic pH probes and universal indicator solution/paper are the two main ways of finding numerical pHs.To find find whether a substance simply has a pH greater or less than neutral pH 7, indicators like methyl orange and phenolphthalein can be used.Google search images to find out what colours they go.
What chemical reagent of protein?
Biuret reagent is used to test for protein in urine. It is a common test that students in biology class perform. Urine is added to a test tube, followed by approximately the same amount of Biuret reagent. If the solution turns lavender this means that there are proteins present in the urine.
