---
title: "A student investigates the kinetics of the gas-phase reaction represented by the equation 2 \\(\\text{NO(g)}\\) + \\(\\text{Cl}_2\\text{(g)}\\) \\(\\rightarrow\\) 2 \\(\\text{NOCl(g)}\\). The initial-rate data collected from three experimental trials at 298 K are shown in the table below.  | Trial | Initial \\([\\text{NO}]\\) (M) | Initial \\([\\text{Cl}_2]\\) (M) | Initial rate of formation of \\(\\text{NOCl}\\) (M/s) | |—|—|—|—| | 1 | 0.10 | 0.10 | \\(1.2 \\times 10^{-3}\\) | | 2 | 0.20 | 0.10 | \\(4.8 \\times 10^{-3}\\) | | 3 | 0.10 | 0.30 | \\(3.6 \\times 10^{-3}\\) |  Based on these data, what is the value and units of the specific rate constant, \\(k\\), for the reaction?"
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date_modified: "2026-08-19T12:39:59+00:00"
---

# A student investigates the kinetics of the gas-phase reaction represented by the equation 2 \(\text{NO(g)}\) + \(\text{Cl}_2\text{(g)}\) \(\rightarrow\) 2 \(\text{NOCl(g)}\). The initial-rate data collected from three experimental trials at 298 K are shown in the table below.

| Trial | Initial \([\text{NO}]\) (M) | Initial \([\text{Cl}_2]\) (M) | Initial rate of formation of \(\text{NOCl}\) (M/s) |
|—|—|—|—|
| 1 | 0.10 | 0.10 | \(1.2 \times 10^{-3}\) |
| 2 | 0.20 | 0.10 | \(4.8 \times 10^{-3}\) |
| 3 | 0.10 | 0.30 | \(3.6 \times 10^{-3}\) |

Based on these data, what is the value and units of the specific rate constant, \(k\), for the reaction?

A student investigates the kinetics of the gas-phase reaction represented by the equation 2 \(\text{NO(g)}\) + \(\text{Cl}_2\text{(g)}\) \(\rightarrow\) 2 \(\text{NOCl(g)}\). The initial-rate data collected from three experimental trials at 298 K are shown in the table below.

| Trial | Initial \([\text{NO}]\) (M) | Initial \([\text{Cl}_2]\) (M) | Initial rate of formation of \(\text{NOCl}\) (M/s) |
|---|---|---|---|
| 1 | 0.10 | 0.10 | \(1.2 \times 10^{-3}\) |
| 2 | 0.20 | 0.10 | \(4.8 \times 10^{-3}\) |
| 3 | 0.10 | 0.30 | \(3.6 \times 10^{-3}\) |

Based on these data, what is the value and units of the specific rate constant, \(k\), for the reaction?

- **A.** \(1.2 \text{ M}^{-2}\text{s}^{-1}\)
- **B.** \(1.2 \text{ M}^{-1}\text{s}^{-1}\)
- **C.** \(12 \text{ M}^{-2}\text{s}^{-1}\)
- **D.** \(12 \text{ M}^{-1}\text{s}^{-1}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119360/*