The Mechanism for the Gas-Phase Reaction That Converts Nitrogen Dioxide

question 1

Multiple Choice

The mechanism for the gas-phase reaction that converts nitrogen dioxide, NO₂, into nitric oxide, NO, and oxygen, O₂ was explored by measuring the initial rate of the reaction for different pressures of reactant. The data below shows how the initial rate of reaction varied with the partial pressure of nitrogen dioxide at a temperature of 300 °C. An inert buffer gas was used so that the overall initial pressure was the same for each experiment. Use the method of initial rates to determine the order of the reaction.
$\begin{array}{lllll}\mathrm{p} / \mathrm{Pa} & 2000 & 4000 & 6000 & 8000 \\\mathrm{v}_{0} /\left(\mathrm{Pa} \mathrm{s}^{-1}\right) & 0.36 & 0.65 & 0.94 & 1.21\end{array}$

• A) Zeroth order
• B) First order
• C) Second order
• D) Third order

---

Definitions:

Direct Labor Workers

Employees who are directly involved in the production of goods, their wages are considered direct labor costs.

Denominator Level

The base or reference level used in various accounting or financial ratios, indicating the scale or volume for allocation or comparison.

Budget Variance

Budget variance is the difference between the budgeted or planned financial activity and the actual financial performance.

Fixed Manufacturing Overhead

Costs associated with production that do not change with the level of output, such as rent, salaries, and equipment depreciation.