Ochem... can you please check my work for this prelab (oxidation of an alcohol to a carboxylic acid)I've circled important info in the lab...One important note was to take into account the concentration of nitric acid (HNO3, 15.7 M)Other amounts being used are 0.4 mL of benzyl alcohol and 1.2 mL of concentrated nitric acidThank you! Reaction:CH-CH₂OH + HNOHalf Reactions:CHCH₂OHH20 + CH-CH₂OH-> CHCOOH + 4H+ 4eOverall Reaction:CH-CH₂OH + 4HNO₂CECOOHMass of benzyl alcohol:Moles of nitric acid:Nitric acidCaHCOOH + NO₂0.4mL 1.04g = 0.416 g CH-CH₂OH1 mLTheoretical Yield:HNO4e + 4H+ 4HNO-> 4NO₂ + 41.0CusCOOH + 4NO₂ + 3H₂01.2mL 15.7 M = 18.84 mmal = 0.01884 mol HNO1LLimiting Reagent:Benzyl alcohol 0.4 ml CH-CHOH 1.04 g CaH:CH-OH |Imol CHCOOH = 0.003847 mol CECOOH1 mL CaH:CH₂OH 108.14g Cali:CH₂OHNO₂0.01884 mol HNO: 1 mol CaH:COOH = 0.00471 mol Cu-COOH4 mol HNOs0.416g CH:CH:OH| 1mol CH5CH2OH |1 mol Cl-COOH108.14g CusCHOH 1mal CaH:CH₂OH122.12 g CH-C|122.12 g CH-COOH =0.478 C COOH1mal CaHCOOH EXPERIMENT 18PURPOSE:OXIDATION OF AN ALCOHOL TO A CARBOXYLIC ACIDTo prepare a carboxylic acid via the oxidation of a primary alcohol. To demonstratemethods of reaction, purification and spectroscopic analysis.READ ABOUT: balancing redox equations, alcohol oxidation, microscale reactions.EQUIPMENT: 5 mL reaction vial, microcondenser, Claisen adapter, drying tube, Hirschfunnel/vacuum flask, hot plate, Al heating blockCHEMICALS: benzyl alcohol, concentrated nitric acid (HNO3, 15.7 M).HAZARDS: Nitric acid is highly corrosive and an oxidizer. Avoid contact with skin and washimmediately if it occurs.DISCUSSION: Primary alcohols can oxidized to aldehydes or carboxylic acids depending upon thereagent used. A gentle oxidizer such a cupric oxide (CuO) or pyridinium chlorochromate(PCC) will stop at the aldehyde. However the more common oxidizing agents, such as chromicacid (CrO3) or permanganate (MnO4), tend to proceed on to the carboxylic acid. Moreover,these reagents contain metals that may yield toxic by-products. In this exercise, a less commonoxidizer, HNO3, will be used to carry out the following reaction.OH-CH₂ + HNO30&OH+ NO₂Nitric acid, while highly corrosive, is relatively easy to handle, and the product nitrogen oxides(here represented by NO2) can be easily absorbed by base.PRE-LAB:In addition to the usual items, pre-lab preparation for this experiment should include thefollowing:a) Write balanced equations for both half-reactions of the redox. Combine themto determine the overall balanced redox equation.b) Determine the limiting reagent and calculate the theoretical yield of acid.Remember to take into account the concentration of the nitric acid solution.PROCEDURE:1) Assemble the reaction vial, Claisen adapter, and condenser as in Figure 12. Close the cap over thestraight side of the Claisen tube with a septum, Teflon side down.2) Loosely fill the drying tube with glass wool. Moisten the glass wool with 10% NaOH solution(approx. 10-20 drops). Attach the drying tube to the apparatus. This will act as a gas trap toabsorb nitrogen oxides produced.3) Set up a hot plate with Al block and warm the block to 95-100°C. A setting of 4 may be used forfaster warming, but 2 should be sufficient to maintain the desired temperature.704) Carefully measure 0.4 mL of benzyl alcoholinto the reaction vial. Connect to theapparatus and place in the Al block towarm. Initiate water flow in thecondenser.5) Fill a syringe with 1.2 mL of concentratednitric acid and carefully insert the needlethrough the septum, as shown in thefigure.drying tubeE6335looselymoistecondens

The overall reaction taking place is- C6H5CH2OH+4HNO3→C6H5COOH + 4NO2+3H2O

Answered: Mass of benzyl alcohol: 0.4mL 1.04 g =…

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...