---
title: "A student analyzes experimental kinetic data for the gas-phase reaction reactant decomposition reaction and determines that the rate law is \\(\\text{rate} = k[\\text{NO}_2]^2\\). If concentration is expressed in \\(\\text{M}\\) and the reaction rate is expressed in \\(\\text{M}\\cdot\\text{s}^{-1}\\), which of the following represents the correct units for the rate constant, \\(k\\)?"
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url: "https://nerd-notes.com/ubq/119210/"
date_modified: "2026-08-19T12:39:22+00:00"
---

# A student analyzes experimental kinetic data for the gas-phase reaction reactant decomposition reaction and determines that the rate law is \(\text{rate} = k[\text{NO}_2]^2\). If concentration is expressed in \(\text{M}\) and the reaction rate is expressed in \(\text{M}\cdot\text{s}^{-1}\), which of the following represents the correct units for the rate constant, \(k\)?

A student analyzes experimental kinetic data for the gas-phase reaction reactant decomposition reaction and determines that the rate law is \(\text{rate} = k[\text{NO}_2]^2\). If concentration is expressed in \(\text{M}\) and the reaction rate is expressed in \(\text{M}\cdot\text{s}^{-1}\), which of the following represents the correct units for the rate constant, \(k\)?

- **A.** \(\text{M}\cdot\text{s}^{-1}\)
- **B.** \(\text{s}^{-1}\)
- **C.** \(\text{M}^{-1}\cdot\text{s}^{-1}\)
- **D.** \(\text{M}^{-2}\cdot\text{s}^{-1}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119210/*