What is the chemical name and formula of the precipitate?
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Test for Phosphate?
1. Mix 1ml of hydrolysate and 3ml of NH4OH solution.
2. Add 10% HNO3 solution until acidic to litmus.
3. Add 2ml of 2.0M ammonium molybdate solution.
4. Warm in a boiling water bath for 2 minutes. Observe for the formation of yellow precipitate.
What is the chemical name and formula of the precipitate?
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- Explain the chemical basis (reaction) of Millon’s test. (Generic reaction and explanation) What is the difference between Millon's test and Biuret test?(minimum 5)TEST FOR PRESENCE OF STARCH 1. Starch solution is due to what organic compound? TEST FOR PRESENCE OF SIMPLE SUGAR 2. What is simple sugar? COAGULATION TEST 3. What is meant by coagulation of proteins?30. What test could distinguish between palmitate and linoleic acid? a. Huble's test b. saponification c. both a and b d. neither a nor b 36. What was added to the sample prior to heating in acrolein test? a. KHSO4 b. ethanol c. both a and b d. neither a nor b 37. Which of the following is a general test for lipids? a. solubility test b. Huble's test c. both a and b d. neither a nor b
- Test tube Ascorbic acid stock (20 μg/mL) Citrate buffer Final Concentrations 1 0 μL 1000 μL 0.0 μg/mL 2 125 μL 875 μL 2.5 μg/mL 3 250 μL 750 μL 5.0 μg/mL 4 500 μL 500 μL 10.0 μg/mL 5 750 μL 250 μL 15.0 μg/mL 6 1000 μL 0 μL 20.0 μg/mL 7 1 mL of the fresh orange juice (20x diluted) 8 1 mL of the heated orange juice (20x diluted) 9 1 mL of the pre-citrus urine sample (5x diluted) 10 1 mL of the post-citrus urine sample (5x diluted) Plot a graph in which y-axis represents for absorbance and x-axis represents for concentration From graph, y=mx + c Calculate the vitamin C concentrations of samples by the equation with consideration of dilution factors. 1. StandardCurve Sample (μg) Absorbance (520 nm) 0.0 0.621 2.5…MATCHING TYPE; Match A to B A. Acrolein tesT Benedicts test Biuret test Iodine test Barfoed’s test Molisch test Seliwanoff’s test Fehling’s test Salkowski’s test Furter-Meyer test B. A. The test for the presence of cholesterol. B. The test for reducing sugars in acidic solution. C. The test is used to detect cholesterol in a solution D. The test for the presence of starch/amylose. E. The test for presence of reducing sugars in alkali solution. F. The general test for carbohydrates. G. This method is used to detect the presence of tocopherols H. The test to distinguish monosaccharides from disaccharides I. The test for the presence of fats or glycerin. J. The test to determine ketohexose from an aldohexose.In excess of alkaloidal reagent, did the precipitate formed dissolve or not? What is the evidence for your answer?
- 6 item / matching type Samples subjected to a test were given. Determine the objective of the test. Choices: Confirm the hydrogenation reaction Identify degree of unsaturation Determine the acid value. Differentiate fixed oil from essential oils Confirms the esterification of the hydroxyl group Test the presence of unsaturated FA Determine alkaline hydrolysis to produce salts of fatty acids Identify the nature of salt Confirm the presence of glycerol Methyl salicylate in Spot Test Beeswax in Saponification Test Linseed oil in Iodine Test Tallow in Acrolein Test Perla in Formation of Soluble Salt Cholesterol in Salkowski TestIIC. ZAK'S TEST The figure below summarizes the results for acrolein test. Provide the correct inference for the given result.PUT A CHECK Positive for cholesterol Negative for cholesterol A B CBARFOED’S TEST FOR MONOSACCHARIDESPlace 1 mL (20 drops) of each 1% carbohydrates solution in separate test tubes. Prepare a control with 1 mL water. Add 4 mL Barfoed’s reagent. Place the test tubes in boiling water bath for 10 minutes. Remove the test tubes and cool in cold water. Record your observations. A precipitate of cuprous oxide which may be green to red, indicates that a monosaccharide is present. Record your result and conclusion. Identify the compounds that are monosaccharides. SELIWANOFF’S TEST FOR KETOHEXOSESPlace 5 drops of 2% carbohydrate solution in separate test tubes. Prepare a control with 5 drops water. Add 1 mL of Seliwanoff’s reagent to each test tubes and heat. Record your results. The rapid formation of a bright red indicates that a ketohexose is present. Identify the compounds that are ketohexoses. IODINE TESTS FOR POLYSACCHARIDESPlace 2 mL of each carbohydrate solution in separate test tubes. Prepare a control with 2 mL of water. Add 1 drop of iodine solution…
- SOMOGYI-NELSON Method(clinical chemistry) a. What is the type of blood sample used and how much of it is added to distilled water? b. How much distilled water was used in the procedure? c. What are the protein precipitants used and indicate the specific concentration of each? d. What is the color of the precipitate?IIB. ACROLEIN TEST The table below summarizes the results for acrolein test. Provide the correct inference for the given result. (PUT A CHECK) Positive for glycerol Negative for glycerol A B C D8 sources of monosaccharaides