0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why FeCl2 is not used to identify phenol?
Because it's a test for phenols or enols
What is a positive result with the antinuclear antibody test?
If fluorescent cells are seen, the test is positive. When positive, the serum is diluted, or titered, and the test done again.
When using the phenol red carbohydrate broth fermentation test at what pH is the pH indicator yellow?
below 6.8
What is the triiodomethane reaction of phenol?
The triiodomethane (iodoform) reaction of phenol involves the conversion of phenol to iodoform in the presence of iodine and sodium hydroxide. The reaction proceeds through oxidation of phenol to benzoic acid, followed by further oxidation and degradation to iodoform. This reaction is commonly used as a test for the presence of a methyl group attached to a phenolic compound.
What is the chemical basis of the iodine and Molisch's test?
The iodine test: the ion I3(-) react with starch forming a blue color.Molisch test: dehydrated saccharides (with sulfuric acid) form an aldehyde whic react with a phenol an a red color is obtained.
Does phenol give a positive biuret test?
No. The Biuret test only gives a positive result if a peptide bond exists. Phenol doesn't have a peptide bond, so it will not give a positive test.
Suggest a chemical test(s) to distinguish ethanol and phenol. Include the reagents reaction conditions and observations. And the equation?
Phenol solution, or phenol directly from the manufacturer?If the phenol is in the form it comes in from the factory, no chemical test is necessary. Phenol is a white crystalline solid.If it's dissolved in water, the easiest test is pH. Phenol solution is more acidic than ethanol. So...whatever you use for a pH test will do ya.
What is the use of chick-Martin test?
Chick martin test is used to estimate the efficacy of a disinfectant. In this test a standard culture of Salmonella typhi, is tested for a fixed period (30 minutes) against various concentrations of phenol solution and various concentrations of the testing disinfectant; the result is expressed as the phenol coefficient, the highest dilution of the given disinfectante that kills bacteria, divided by the highest dilution of phenol that sterilizes the solution, within the measured time.
What is the use of chick martin test?
Chick martin test is used to estimate the efficacy of a disinfectant. In this test a standard culture of Salmonella typhi, is tested for a fixed period (30 minutes) against various concentrations of phenol solution and various concentrations of the testing disinfectant; the result is expressed as the phenol coefficient, the highest dilution of the given disinfectante that kills bacteria, divided by the highest dilution of phenol that sterilizes the solution, within the measured time.
Is a HIV test done at 85 day after the intercourse and the result is negative is that result is valid?
Yes, it would be a valid test.
What is molisch?
Molisch's Test refers to a chemical test used to test for carbohydrate existence. This is done using carbohydrate dehydration with hydrochloric or sulfuric acid to create aldehydes. These condense a couple phenol molecules to produce purple or red compounds.
Phenol coefficient test in microbiology?
Phenol coefficient test is best known screening test in which potency of a disinfactant is compared with that of phenol. A series of a dilutions of phenol and the disinfactant being tested are prepared. A standard amount of Salmonella tyhpii and Staphylococcus aureus are added to each dilution; the dilutions are then placed in a 20 to 37oC water bath. At 5-minute intervas, samples are withdrawn from each dilution and used to inoculate a growth medium, which is incubated for two or more days and then examined the growth. If there is no growth in the growth medium, the dilution at that particular time of sampling killed the bacteria. The highest dilution that kills the bacteria after 1o min. expousre, but not at 5min. is used to calculate the phenol coefficient. This is done by dividing the resiprocal of the appropriate phenol dilution.
Why would vanillin test positive in a ferric chloride test?
It would test positive because there is a phenol group in vanillin.
Is Lucas test applicable for cyclohexanol?
The Lucas test is applicable for cyclohexanol. Cyclohexanol is a secondary alcohol and s reported to react with the Lucas reagent after a few minutes.
Why FeCl2 is not used to identify phenol?
Because it's a test for phenols or enols
How many days after bleeding implantation or a period can a Home Pregnancy Test be done for a reliable result?
for a most accurate result try a test on the day or after your period is missed
Why do ibuprofen and naproxen not give a positive test with 1 percent ironIII chloride?
Iron (III) Chloride reacts with the Phenol group. Ibuprofen and Naproxen do not have a phenol group. Acetaminophen, on the other hand, does have a phenol group with would indicate a positive test (purple color change) with in the presence of Iron (III) Chloride.
