Question

3. A student obtained the following data for the hydrolysis of an organic ester: Rate, k, Expt. [Esterl Ho] TK mol/Ls Vmol-s 1 0.100 0.200 288 1.04 x10 0.0521 2 0.100 0.200 298 2.02 x 10 0.101 3 0.100 0.200 308 3.68 x 10' 0.184 4 0.100 0.200 318 6.64x 10' 0.332 1 0.100 a. Prepare a plot of the rate constant as a function of temperature (attach plot); b. Prepare an Arrhenius plot, In k as a function of inverse temperature (attach plot); c. Determine the activation energy and frequency factor for this reaction. Regression equation for Arrhenius plot: Coefficient of determination, R: Activation Energy, E Frequency factor, A" Labels containing an asterisk () require an example calculation to obtain credit. Show your example calculations below (No credit will be given without example calculations being presented based on your data). Clearly label the identity of the calculation (continue on the back or attach a separate sheet):

Answer 1

Anheniu.s equation. -Rate constan t AFrequency factor Ea = Activation energy R gas constant RT T- Temperatare Plos enk against

Ink vs 1/T 0.0031 0.00315 0.0032 0.00325 0.0033 0.00335 0.0034 0.00345 0.0035 -0.5 -2 y =-5635·8x + 16.615 R2 = 0.9999 -2.5 -3.5

In k 1/T 0.05212.954 288 0.00347 0.101-2.293298 0.00336 0.184-1.693308 0.00325 0.332-1.103318 0.00314 1/T 0.003472.954 0.003362.293 0.00325 1.693 0.00314 1.103 lin k

No: ate: Regression-egaation --y -5635-8X t16. 615 Coefficient of determination R오 -0.999 9 AcHivation energy Frequency FactorA. 64 XIO E 46 856. 04 7 ccording to the eguoticn Cintercept) In. A 16.615 5635.8 三一Eg 8-31千Jende Ea = 46856.04 J