Question 20 of 28 The following data were obtained in the experiment for Carbonyl Compounds. Using the data below identify compounds A, B, C, and D and justify your answer. Y Visible+Results Samples A B C D Solubility in Solubility in 2,4-DNP H₂O NaOH Test + ++ ++ ++ ++ ++ ++ ++ ++ Tollen's Test ++ ++ lodoform Jones' Test Test ++ ++ - ++

Question 20 of 28 The following data were obtained in the experiment for Carbonyl Compounds. Using the data below identify compounds A, B, C, and D and justify your answer. Y Visible+Results Samples A B C D Solubility in Solubility in 2,4-DNP H₂O NaOH Test + ++ ++ ++ ++ ++ ++ ++ ++ Tollen's Test ++ ++ lodoform Jones' Test Test ++ ++ - ++

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter6: Random Errors In Chemical Analysis

Section: Chapter Questions

Problem 6.3QAP

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n eFundi : NCHE 121 1-1 P 202 x b My Questions | bartleby G condenser of the distillation NCHE 121 - Practical test 5 - ADVANCED CHEMISTRY FOR X A docs.google.com/forms/d/e/1FAlpQLSeoSJFyh92VzGCHUJHTnR1Qhr07K-15YDL6mRq2jPckCRyPIQ/formResponse Question 7: Balance the chemical equation in Figure 7 in acid medium. How many moles of sulphuric acid do you have to add to balance this chemical equation? [The answer is a whole number.] * Jou antwoord Figure 7 OH Cr,0,* Cr+ Question 8: Consider the information in your answer to Question 7. What minimum mass in grams of potassium dichromate is required to produce 1.500 grams of the ketone? [Molar masses: Alcohol = 100.159 g-mol-"; Ketone = 98.143 g-mol-; K2Cr2O, = 278.185 g-mol-. [Give only the number without the unit. Round 17:51 P Type here to search 23°C Mostly sunny 2021/10/26 0= 1
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ASSAY Calibration solutions Calibration solutions of naproxen in the range 5 – 25 μg/mL were prepared. Sample preparation 20 tablets weighing 12.3819 g were crushed to a fine powder. A portion of the powder (145.4 mg) was shaken with approximately 150 mL of acetic acid (0.05 M) for 5 min and then made up to volume in a 250 mL volumetric flask (stock solution). Approximately 50 mL of the stock solution was filtered and a 25 mL aliquot was diluted to 100 mL in a volumetric flask. 10 mL of the resulting solution was further diluted to 100 mL with acetic acid (0.05 M). Analysis The standards and sample solutions were analyzed by HPLC under the following conditions: Column: octadecylsilyl (ODS), 4.6 mmx150 mm, mobile phase: acetonitrile : 0.05 M acetic acid (85:15), flow rate: 1 ml/min, UV detection at 243 nm. Results: A calibration curve of concentration versus peak area was constructed for the standard solutions and gave the straight-line equation: y = 3555.6x + 85, r = 0.9999 The area…
j8P3jH-IQs_dp5pR4ENzvdYC-70kXyMz36BqJhw3sVPfBxMaZmh3VAdOl15aFtsHtwY9DBTUk4n818JEN-OWHIZVK39yT1iQorCn2ao?loBw7QYjlbavbSPXtx- egin | Student Veri. Hb Logout MyProgrammingLab Imported From IE ITEC2110:Summer2... TunesToTube - Upl. O Web Development.. O KINETICS AND EQUILIBRIUM Cla Using a second-order Integrated rate law to find concentration c.. -1 At a certain temperature this reaction follows second-order kinetics with a rate constant of 16.0 M s t: CICH,CH,C1 (g) → CH,CHCI (g) +HC1 (g) Suppose a vessel contains CICH, CH,Cl at a concentration of 1.46 M. Calculate the concentration of CICH,CH, Cl in the vessel 0.670 seconds later. You may assumne no other reaction is important. Round your answer to 2 significant digits.
In the technique of high performance liquid chromatography (HPLC) the peak area response for a particular analyte is directly proportional to concentration Analgesic tablets typically consist of aspirin and caffeine as the active ingredients, the remainder made up of inert binding material. The concentrations of aspirin and caffeine may be routinely monitored using HPLC, whereby the peak areas obtained from a solution of the tablet are compared with those obtained from standard solutions of the analytes. In an analysis to determine the concentration of caffeine in such a tablet, the following data were recorded: Solutions Analysed: Tablet Sample: Mass of tablet (dissolved in 250 cm methano): 0.523 g Caffeine Standard: Mass of caffeine (diessolved in 500 cm methanol) 0.105 g HPLC results: Solution Peak Area (catfeine) 1. Tablet Sample 325 2. Caffeine Std. 865 The concentration of caffeine in the tablet (expressed as a mass (w/wl percentage) was Oa 1.89 Ob 13.4 O 3.77 Od. 267 Oe 7.54 You…
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