A student obtained the following data for the decomposition of ammonia on a platinum surface at 856 °C. NH3(9) 1/2 N₂(g) + 3/2 H₂(g) [NH3], M seconds 1.33x10-2 6.65x10-3 0 998 3.33x10-3 1.50x10³ (2) Is the reaction zero, first, or second order? 1.67x10-3 1.75x103 (1) What is the half-life for the reaction starting at t=0 s? What is the half-life for the reaction starting at t=998 s? Does the half-life increase, decrease or remain constant as the reaction proceeds? # (3) Based on these data, what is the rate constant for the reaction? Ms-1

A student obtained the following data for the decomposition of ammonia on a platinum surface at 856 °C. NH3(9) 1/2 N₂(g) + 3/2 H₂(g) [NH3], M seconds 1.33x10-2 6.65x10-3 0 998 3.33x10-3 1.50x10³ (2) Is the reaction zero, first, or second order? 1.67x10-3 1.75x103 (1) What is the half-life for the reaction starting at t=0 s? What is the half-life for the reaction starting at t=998 s? Does the half-life increase, decrease or remain constant as the reaction proceeds? # (3) Based on these data, what is the rate constant for the reaction? Ms-1

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

Chapter12: Chemical Kinetics

Section: Chapter Questions

Problem 82E: The decomposition of NH3 to N2 and H2 was studied on two surfaces: Surface Ea (kJ/mol) W 163 Os 197...

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