Lab 3 Report

How to solve for the reaction rate order and rate constant  of the dissolution of CuO given only the pH per time below? Time (min) pH 0 0 3 0.05 6 0.12 9 0.23 12 0.34 15 0.45

In aqueous solution buffered at a pH of 6.75 Penicillin G (molecular weight of 334.39 g/mole) undergoes hydrolysis via a pseudo first order reaction that has an activation energy of 77.3 kJ/mole and a pseudo first order rate constant of 1.58 x 10-7 s-1 at 30°C. Which of the following graphs considering the hydrolysis reaction would be straight? Check all that apply.  a. [Penicillin G] vs. time b. ln[Penicillin G] vs. time c. rate vs. [Penicillin G]

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a) Explain the differences between general acid/base catalysed reaction and specific acid/base catalysed reaction b) Sketch a plot of log k against pH for specific acid catalysed reaction and general acid catalysed reaction and explain.

write the correct rate law expression for the reaction.

Use the space below for reactions and mechanisms

explain why? • Levofloxacin is a broad spectrum antibotic. It is reported that itis completely removed in an unchanged from the body and itselimination half life is 7 h. Determine the amount oflevofloxacin eliminated in urine at 10 h following IV bolusadministration of 6,25 mg/kg dose to a patient weighing 80 kg.a. 185,75 mgb. 314,25 mgc. 314,25 mg/kgd. 18,57 mg How long will it take to lose 75% of the administered doseof a drug from the body if the drug follows first orderprocess?a. 3,32 half livesb. 2,32 half livesc. 2.0 half livesd. None of the above

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Based on your analysis and the answers to all of the above questions, determine the mechanism of the reaction.

What is a ‘shape-selective catalyst’?

have a rate 13.124. Testing for a Banned Herbicide Sodium chlorate w in EU countries since 2009. A simple colorimetric test for the presence of the chlorate ion in a solution of herbicide was used relies on the following reaction: 2 MnO4 (ag) + 5 C103 (aq) + 6 H*(aq) → 2 Mn2+ (aq) + 5 C104¯(ag) + 3 H,0(0) The table contains rate data for this reaction. [CIO3 ]o (M) [H*]% (M) Initial Rate [MnO4 lo (M) (Mis) Experiment 5.2 X 10 0.10 0.10 0.10 1 3.3x 10 0.10 0.10 0.25 1.6 x 10 0.10 0.30 0.10 7.4 X 103 0.20 0.10 0.10 4 HO THE Determine the rate law and the rate constant for this reaction. 3,125 T 3.

Activated complex 200 (a) 150 Potential Reactants (b) Energy 100 (c) Products 50 Reaction Pathway Nina claims that the graph shown above represents an exothermic reaction with a AH of +100kJ and that energy will be absorbed during this reaction. Is Nina correct? If not, explain and correct her mistake giving explanation. Format BIU- a Farch

Which experiment is NOT used as a method of physically measuring the reaction rate? Spectroscopy Conductivity Pressure measurements Titration

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Determine the rate law, rate constant(k) of the reaction with the given information. What's the balanced reaction using the half-reaction method. Also for experiment 1 what will be the concentration of [Fe2+] after 10 seconds?  Chart Shows the initial reaction rate measurement for the acidic conditions performed in acidic condition (H+).  Equation 2Fe2+(aq)+Cl2(aq)----> 2Fe3+(aq)+2Cl-(aq)  Experiments [Fe2+] [Cl2] [H+] Rate Experiment 1 0.0014 M 0.0045 M 0.10 M 1.03x10-5 M/s Experiment 2 0.0040 M 0.0045 M 0.10 M 1.98x10-5 M/s Experiment 3 0.0014 M 0.0090 M 0.10 M 2.02x10-5 M/s Experiment 4 0.0040 M 0.0090 M 0.10 M 3.90x10-5 M/s Experiment 5 0.0014 M 0.0045 M 0.05 M 1.97x10-5 M/s Experiment 6 0.0014 M 0.0045 M 0.01 M 9.98x10-5 M/s

Topic: Reaction Kinetics Atropine base decomposes with a rate constant of 0.016/s at 40°C. The energy ofactivation is 7.7 Kcal/n. Calculate the rate constant and half-life at 10°C. (R = 1.987cal/n-K). Express answers in 3 significant figures.

Chemistry outline a method to determine the rate of this single displacement reaction Zn + FeCl₂ -> Fe + ZnCl₂

Please confirm if my answer is correct or not. Due to the need for this to be correct I would like you to provide me with a confidence score in you answer on a scale from 1 to 10 how confident are you in your answer. Please be sure to double check your answer

Methyl acetate is hydrolyzed in approximately 1M HCI at 25°C. Aliquots of equal volume are removed at intervals and titrated with a solution of NaOH. Calculate the magnitude of the rate constant from the following data: t/s 339 2745 4546 v/cm³ 26.34 29.70 31.81 1.22 E-4 O None of the choices 9.46 E-4 O 5.89 E-4 O 7.83 E-2 1242 27.80 39.81

Use the References to access important values if needed for this question. For the gas phase isomerization of methyl cis-cinnamate, cis-C6H5 CH=CHCOOCH3 → trans-C6H5 CH=CHCOOCH3 the rate constant at 669 K is 9.12 x 10-4 s and the rate constant at 711 Kis 5.79 x 107 s-¹. -3 The activation energy for the gas phase isomerization of methyl cis-cinnamate is kJ.

What unit is use to describe reation rate?

For this question you will need to work all of your answers on scratch paper. Once completed, upload an image of your answers showing all work and clearly identifying your answers. Use the Browse My Computer button to upload an image. It is known that the activity of penicillin declines over several weeks when it is stored at room temperature in the absence of stabilizers. The following concentrations of active penicillin was found as several weeks passed. This data shows the decline in effectiveness of the penicillin due to a decomposition reaction. Time in weeks 0 5.0 10.0 15.0 20.0 25.0 30.0 Concentration of Penicillin in Molarity 0.076 0.046 0.020 0.010 0.0050 0.0020 0.0010 a. Show all your work, what is the average rate of the reaction? b. Show all your work, what is the instantaneous rate from 5.0 to 20.0 weeks? c. Show all your work, what is the instantaneous rate from 0.0 to 10.0 weeks? d. Show all your work, what is the instantaneous rate from 15.0 to 30.0 weeks?

The following results were obtained by monitoring the reaction H*(ag) + l'(ag) + ½ H2O2(ag) → ½ I2(ag) + H2O [1] [H,O2] rate 0.020 0.020 3.3 x 10-5 0.040 0.020 6.6 x 10-5 0.060 0.020 9.0 x 10-5 0.040 0.040 1.3 x 104 Determine the order of the reaction with respect to l and H2O2 and also determine the value for the rate constant, k

Rate = -(Delta[RCl])/Delta t andln[RCl]t=-k*t+ln[RCl]0 < [R-Cl]-time equation Test tube A = 0.30 of 0.10M NaOH(aq), 6.70ml DI H2O & 1 drop of bromophenol bue Test Tube B = 3.00M of 0.10M R-CL in acetone. Mix together in 3 water baths Bath A Trial 1= 20C, 53.6s Trial 2= 20C, 49s for color to changeBath B Trial 1= 32C, 18s Trail 2= 32C, 20s Bath C Trial 1= 10C, 204s Trial B= 10C, 200sQ.6 Rearrange the Arrhenius equation into a linear form relating k and TQ.6a To determine Ea, a graph of (xaxis) ____ (in units of ___) vs. (yaxis) ____ needs to be made. This will yioeld a _____ line with a slope = ____ Q.6b enter values used in the table Q.6c Determine the exp. values of Ea with correct sig figs and units

Rate = -(Delta[RCl])/Delta t andln[RCl]t=-k*t+ln[RCl]0 < [R-Cl]-time equation Test tube A = 0.30 of 0.10M NaOH(aq), 6.70ml DI H2O & 1 drop of bromophenol bue Test Tube B = 3.00M of 0.10M R-CL in acetone. Mix together in 3 water baths Bath A Trial 1= 20C, 53.6s Trial 2= 20C, 49s for color to changeBath B Trial 1= 32C, 18s Trail 2= 32C, 20s Bath C Trial 1= 10C, 204s Trial B= 10C, 200sQ.6 Rearrange the Arrhenius equation into a linear form relating k and TQ.6a To determine Ea, a graph of (xaxis) ____ (in units of ___) vs. (yaxis) ____ needs to be made. This will yioeld a _____ line with a slope = ____ Q.6b enter values used in the table Q.6c Determine the exp. values of Ea with correct sig figs and units

The acid-catalyzed hydrolysis of sucrose, C12H22O11 + H₂O + H+ -> C6H12O6 + C6H12O6 + H+ is known as "inversion of sucrose" because the angle, a, by which the solution rotates polarized light changes from positive to negative as the reaction proceeds (data from 30 degree C): t/hr a 0 78 2 71 4 12 18 24 42 65.10 44.60 32.40 22.45 2.30 48 -1.96 61 -9 86 95 -15.80 -17.25 -21.15 ∞ Use this data to show that the reaction is first order and determine its rate coefficient (at 30 degree C).