Hydrogen Iodide Decomposes at 800 K Via a Second-Order Process

question 98

Multiple Choice

Hydrogen iodide decomposes at 800 K via a second-order process to produce hydrogen and iodine according to the following chemical equation.
2 HI(g) → H₂(g) + I₂(g)
At 800 K it takes 142 seconds for the initial concentration of HI to decrease from 6.75 × 10^-2 M to 3.50 × 10^-2 M.What is the rate constant for the reaction at this temperature?

• A)5)12 × 10^-4 M^-1s^-1
• B)9)69 × 10^-2 M^-1s^-1
• C)10.3 M^-1s^-1
• D)1)95 × 10³ M^-1s^-1

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Definitions:

Underapplied Overhead

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Manufacturing Overhead Account

An accounting category that records the indirect costs associated with producing goods, such as utilities for the factory or salaries for the maintenance staff.

Overapplied Manufacturing Overhead

A situation where the amount of manufacturing overhead allocated to products is more than the actual overhead incurred.

Work in Process

Inventory that includes all materials, labor, and overhead costs incurred for products that are in the production process but not yet completed.