The thermal decomposition of phosphine (PH3) into phosphorus and molecular hydrogen is a first-order reaction: 4PH3(g) P4(g) + 6H₂(g) The half-life of the reaction is 28.7 s at 680 °C. Part 1 of 2 Calculate the first-order rate constant for the reaction. Round your answer to 3 significant digits. 1 Part: 1/2 1 Part 2 of 2 0 x10 X Calculate the time required for 86.0 percent of the phosphine to decompose. Round your answer to 3 significant digits. X

The thermal decomposition of phosphine (PH3) into phosphorus and molecular hydrogen is a first-order reaction: 4PH3(g) P4(g) + 6H₂(g) The half-life of the reaction is 28.7 s at 680 °C. Part 1 of 2 Calculate the first-order rate constant for the reaction. Round your answer to 3 significant digits. 1 Part: 1/2 1 Part 2 of 2 0 x10 X Calculate the time required for 86.0 percent of the phosphine to decompose. Round your answer to 3 significant digits. X

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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