### Decomposition of Ammonia on a Platinum Surface#### Reaction Details:- **Temperature:** 856 °C- **Reaction Equation:** \[ 2 \text{NH}_3 \rightarrow \text{N}_2 + 3 \text{H}_2 \]#### Rate of Reaction:- The average rate of disappearance of \(\text{NH}_3\) over the time period from \( t = 0 \, \text{s} \) to \( t = 4102 \, \text{s} \) is found to be \( 1.50 \times 10^{-6} \, \text{M} \cdot \text{s}^{-1} \).#### Problem:- Calculate the average rate of formation of \(\text{H}_2\) over the same time period.\[\text{The average rate of formation of } \text{H}_2 \text{ over the same time period is } \boxed{\phantom{1}} \, \text{M} \cdot \text{s}^{-1}.\]To find the average rate of formation of \(\text{H}_2\), use the stoichiometry of the reaction. For every 2 moles of \(\text{NH}_3\) that decompose, 3 moles of \(\text{H}_2\) are formed. Thus, the rate of formation of \(\text{H}_2\) is:\[\text{Rate of formation of } \text{H}_2 = \left( \frac{3}{2} \right) \times \text{Rate of disappearance of } \text{NH}_3\]\[= \left( \frac{3}{2} \right) \times 1.50 \times 10^{-6} \, \text{M} \cdot \text{s}^{-1}\]\[= 2.25 \times 10^{-6} \, \text{M} \cdot \text{s}^{-1}\]So, \[\text{The average rate of formation of } \text{H}_2 \text{ over the same time period is } 2.25 \times 10^{-6} \, \text{M} \cdot \text{s

The decomposition of ammonia on a platinum surface is as follows: 2NH3 → N2 + 3H2

For the decomposition of ammonia on a platinum surface at 856 °C 2 NH3N2 +3 H2 the average rate of disappearance of NH3 over the time period from t = 0 s to t= 4102 s is found to be 1.50×10-6 M s'. The average rate of formation of H2 over the same time period is |Ms!.

For the decomposition of ammonia on a platinum surface at 856 °C 2 NH3N2 +3 H2 the average rate of disappearance of NH3 over the time period from t = 0 s to t= 4102 s is found to be 1.50×10-6 M s'. The average rate of formation of H2 over the same time period is |Ms!.

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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