The following data were obtained from a study of the decomposition of a sample of HI on the surface of gold at 320 °C: Concentration t, seconds of HI, mmole/L 0.00 5.46 250 3.60 500 2.30 750 1.37 Plot the data using the first- and second-order equations. 1. What is the correlation coefficient (r) for each plot? a. r for first-order? [Select] b. r for second-order? [Select] 2. What is the order for this reaction? [Select] 3. What is the rate constant? [Select] 4. What is the HI concentration (in mmol/L) at 450 s? [Select]

The following data were obtained from a study of the decomposition of a sample of HI on the surface of gold at 320 °C: Concentration t, seconds of HI, mmole/L 0.00 5.46 250 3.60 500 2.30 750 1.37 Plot the data using the first- and second-order equations. 1. What is the correlation coefficient (r) for each plot? a. r for first-order? [Select] b. r for second-order? [Select] 2. What is the order for this reaction? [Select] 3. What is the rate constant? [Select] 4. What is the HI concentration (in mmol/L) at 450 s? [Select]

Chemistry

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...

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Mm.25. Subject :- Chemistry
Consider the following reaction energy diagram: Reaction progress А. [ Select ] How many elementary step are in the reaction mechanism? [ Select ] v Which step is rate-limiting? В. C. [ Select ] Is the overall reaction exothermic or endothermic? С.
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For the decomposition of nitrous oxide at 565 °C2 N2O2 N2 + O2the average rate of disappearance of N2O over the time period from t = 0 s to t = 786 s is found to be 1.37×10-3 M s-1.The average rate of formation of O2 over the same time period is ___________ M s-1. The activation energy for the gas phase decomposition of cyclobutane is 262 kJ.(CH2)42 C2H4The rate constant at 726 K is 5.41×10-4 /s. The rate constant will be 6.98×10-3 /s at ______________. K.
The following initial rate data are for the reaction of hypochlorite ion with iodide ion in 1 M aqueous hydroxide solution: OCr +I- OI + CI Experiment [OCI"]o, M , M Initial Rate, Ms™ -1 1.70×10-3 1.70×10-3 3.40x10-3 3.40x10-3 4.57×10-3 9.15×10-3 4.57x10-3 9.15×103 1 5.41x10-4 1.08×10-3 1.08×10-3 2.17x10-3 2 3 4 Complete the rate law for this reaction in the box below. Use the form k[A]m[B]" , where '1' is understood for m or n and concentrations taken to the zero power do not appear. Don't enter 1 for m or n Rate = From these data, the rate constant is M's.
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For a first-order reaction k A + B time t = 0 s 4.878 1.004 M time t = 19.84 s ? M when k = 0.030329 s-1 what is the concentration of B above in the question mark= _M? 3 sig. fig. normal format. Try to plot concentrations of A, B and rate over time in Excel.
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5. Atmospheric nitrogen and oxygen react to form nitrogen monoxide in an endothermic reaction that absorbs 90.2 kJ of energy per mole of NO formed. Experimental data suggests that the decomposition NO back into N2 and Oz has an activation energy close to 300 kJ/mol. a. Build the energy diagram associated with this reaction. b. Compare the probabilities of the forward and backward processes based on the corresponding activation energies (E) and configuration effectiveness (CE).