Please help me ?? A substance decays with second order kinetics. What is the half-life given a rate constant that is 0.37 M⁻¹ s⁻¹ and an initial concentration of 0.75 M? How much of the substance remains after 13.9 seconds? After 55.2 seconds? (Note: Any scribbled out section seems to be irrelevant to the core text.) **Problem Statement:**If the reaction proceeds at second-order kinetics and has a half-life of 100.0 seconds, what is the rate constant for the reaction when the initial concentration of NO₂ is 1.225 M? Additionally, what will the NO₂ concentration be after:- 35.4 seconds?- 175 seconds?- 865 seconds? **Solution Explanation:**1. **Rate Constant Calculation:** For a second-order reaction, the relationship between half-life (\( t_{1/2} \)) and the rate constant (\( k \)) is given by the equation: \[ t_{1/2} = \frac{1}{k \cdot [A]_0} \] Where \( [A]_0 \) is the initial concentration.2. **Concentration Over Time:** The concentration at any time \( t \) for a second-order reaction can be determined using: \[ \frac{1}{[A]} = \frac{1}{[A]_0} + k \cdot t \] Apply this formula to find the concentration at each specified time.

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If the reaction proceeds at second order kinetics and has half-life of 100.0 seconds. If the reaction is carried out at some temperature, and the initial concentration of NO₂ is 1.225 M, what is the rate constant for the reaction? What will the NO₂ concentration be after 35.4 s? At 175 s? At 865 s?

If the reaction proceeds at second order kinetics and has half-life of 100.0 seconds. If the reaction is carried out at some temperature, and the initial concentration of NO₂ is 1.225 M, what is the rate constant for the reaction? What will the NO₂ concentration be after 35.4 s? At 175 s? At 865 s?

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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