The colour change for the test reaction of an alkene with KMNO4 is from: A. Purple to black/brown O B. Purple to orange O C. Orange to purple O D. Orange to black/brown O E. Purple to yellow
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- Give the reagent or chemical test that would differentiate the following pairs of compounds. Write chemical equations for the reactions. List of Chemical Tests (choose here)I. Halogenation: Bromination with and without lightII. Oxidation: Reaction with Baeyer’s reagent III. Reaction with Ammoniacal Silver Nitrate (AgNO3) or simply Tollen’s reagent a. benzene and ethylbenzeneb. 1-butyne and 2-butynec. 2-methylpentane and 2-methyl-2-pentened. toluene and 1-methylcyclohexeneDiscuss the suitability of bromocresol green and thymol blue (2nd change only) for use as indicators in an acetic acid - sodium hydroxide titration. Paragraph в I A + v ...You resuspend 1 ml of of a purified chlorophyll sample in 10 ml of 80% acetone, and determine that the optical density of the solution (at 652 nm) is 0.88. What is the concentration of your original preparation?
- Describe several general ways that Ab-Ag reactions are detected.The Ksp values of silver chromate Ag2CrO4 and silver iodate Ag(IO3) are given below. Ag2CrO4 Ag(IO3) Ksp 1.12 x 10-12 3.17 x 10-8 Based on these Ksp values, which of the following is true? Choose one option only. Options: a. In the solution consisting of 1.00 x10-4 M Ag+ and 5.00 x10-5 M CrO42-, Ag2CrO4 precipitate will form. b. In the solution consisting of 1.0 x10-4 M Ag+ and 1.0 x10-4 M IO3-, Ag(IO3) precipitate will form. c. In pure water, the solubility of Ag2CrO4 is lower than the solubility of Ag(IO3). d. In the solution consisting of 0.200 M CrO42- and 0.200 M IO3-, Ag2(CrO4) will precipitate first if we add Ag+ ions gradually into the above mixture.This is remdesivir, one of the drugs being used in the treatment of COVID-19. Label the indicated carbons as R, S, or neither. b); NH2 HO OH
- Neroli essential oil and Orange Blossom Absolute are both produced from the flowers of the orange plant [assume sweet orange plant] but have very different scent profiles and physical characteristics. Outline how both fine perfumery materials are produced and explain how the production technology influences their aroma profile. By considering the possible composition of the two extracts, identify the major stability issues that can occur with their use in household cleaning products.Define the following terms: a. ganglioside b. sphingolipidoses c. isoprenoid d. terpene e. mixed terpenoidThe analgesic phenacetin is synthesized by treating 4- ethoxyaniline with acetic anhydride. a. Which of the following is the structure of 4- ethoxyaniline? OCH₂CH3 NH₂ OCH₂CH3 NH₂ OCH₂CH3
- Cyclophosphamide, after reconstitution, has a concentration of 20 mg/mL. The patient, who weighs 67 kg and is 155 cm tall, is ordered cyclophosphamide in 250 mL NS. How many mL will be added to the bag?In Experiment 7, Isolation of Citrus Oils, the compounds isolated were the monoterpene compounds alpha-pinene, beta-pinene, limonene, myrcene and gamma-terpinene. The citrus oils were analyzed using gas chromatography, which separates compounds based on polarity and boiling point. Column chromatography and thin layer chromatography work on similar separation principles as gas chromatography, but rely only on polarity of compounds and solvents for separation. Explain why neither column chromatography nor thin layer chromatography would be appropriate separation methods for the terpenes isolated in Experiment 7. Answer:Based on the color of the pigments on the chromatography paper, explain which wavelengths of lights are absorbed and reflected by chlorophyll a, chlorophyll b, xanthophyll, and beta carotene