Discuss the advantage and disadvantage of Wijs method of iodine value determination. What non-titrimetric method can be used to determine the iodine value of edible oil? Discuss its basic principles and general methods involved.
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- 1. A prescription calls for 50 mg of chlorpheniramine maleate. Using a prescription balance with a sensitivity requirement of 6 mg, explain how you would obtain the required amount of chlorpheniramine maleate with an error not greater than 5%.4. Why is 70% ethanol rather than pure ethanol preferred for use as an antiseptic agent? BARTLEBYBased on this video https://www.youtube.com/watch?v=rKng5-ij6kQ Provide a schematic diagram for the Iodine test methodologies in determining the presence of carbohydrates. Also, give the basic principle for the test.
- 1. The adsorption solution used in SO2 analysis is…a. Tetrachloromercurate(V)b. Tetrachloromercurate(I)c. Tetrachloromercurate(III)d. Tetrachloromercurate(II) 2. Storage of samples under special conditions is carried out with the aim of…a. Samples that do not enter airb. Avoid repeated samplingc. So that it doesn't rotd. Avoid chemical reactions1. The principle behind the test for phosphate is oxidative reaction, conversion of organic form to inorganic phosphate and a precipitation reaction. A. True B. False 2. Sakaguchi test determines amino acids with indole groups present. A. True B. False2. a. What ingredient(s) necessary to white chocolate does this product have? b. Why is this product labeled as “white chocolate style” instead of being simply labeled as “White chocolate”?
- 3. How many milliliters would you need to prepare a 10-2 dilution from a 10ml starting culture?1. The following question tests your lab skills as well as basic knowledge understanding: (1). In Quant Lab, primary standard is defined as _______________________________________________________ . (2). In Quant Lab, secondary standard is defined as ______________________________________________________. (3). In your Lab9-Vinegar Titration, the perceived primary standard material is__________________________________. (4). In Lab9, the perceived secondary standard substance is _________________________________________________. (5). In your Lab9, the balanced titration reaction is _____________________________. It belongs to ___________ titration. At your titration equivalence(end) point, its pH equaled to ~ ___ (rough value). The pH indicator used in the NaOH solution standardization was _______________ while the pH indicator employed in the vinegar determination was _____________ ____________________ In your Lab9 report, you drew the derivative titration curve to help…1. What is the concentration of the solution prepared by diluting 50 µl of ampicillin (1.0mg/ml) to a final volume of 1ml? 2. Determine the volumes of phenol, chloroform, and isoamyl alcohol required to prepare250 ml of a 25:24:1 (v/v) solution.
- Codeine 6 mg/ mL Simple syrup qs ad 2 floz (60 mL) a. Calculate the number of grams of codeine needed b. If we have codeine 30 mg tablets in stock, how many tablets are required? c. Calculate the percentage strength and ratio strength of this preparation 2. Acetazolamide Using Acetazolamide 250 mg tabs X 10 Simple syrup qs 100 mL a. Make qs 250 mL b. Find concentration2 if there is a stock solution of 2000 (ug/ml) , is it possible to use SERIAL DILUTION to generate the following 8 tubes with their concentrations? A 2000 (ug/ml) B 1500 (ug/ml) C 1000 (ug/ml) D 750 (ug/ml) E 500 (ug/ml) F 250 (ug/ml) G 125 (ug/ml) H 0 (ug/ml)Discuss the advantage and disadvantage of Wijs method of iodine value determination.