The Rate Constant for the First-Order Decomposition of a Particular

question 166

Multiple Choice

The rate constant for the first-order decomposition of a particular hydrocarbon is 1.85 *10^-6 s^-1 at 485 K.If the activation energy is 84.0 kJ/mol, what is the value of the frequency factor at this temperature?

• A)4.85 * 10^-4 s^-1
• B)1.11*10⁹ s^-1
• C)2.21 * 10¹ s^-1
• D)2.06 * 10³ s^-1
• E)1.81 * 10 ^-6 s^-1

---

Definitions:

Product Engineer

A professional who designs, develops, and improves products while ensuring they meet manufacturing, cost, and marketing requirements.

Activity Costs

Activity costs refer to the expenses associated with specific activities within a company, such as production, administration, or distribution, used in activity-based costing.

Setup Activity

The tasks involved in preparing equipment or processes for a new production run or activity, often considered in activity-based costing.

Process Engineer

A professional who designs, implements, controls, and optimizes industrial processes, especially continuous ones within the chemical, energy, or manufacturing sectors.