A Concentration-Time Study of the Gas Phase Reaction 2 A₃

question 184

Multiple Choice

A concentration-time study of the gas phase reaction 2 A₃ → 3 A₂ produced the data in the table below. Time (s) [A₃] (M) [A₂] (M)
0 4.00 × 10^-4 0
10 2.00 × 10^-4 3.00 × 10^-4
20 1.00 × 10^-4 4.50 × 10^-4
30 5.00 × 10^-5 ?
What is the average rate of formation of A₂ in the time interval 20-30 seconds?

• A)6.00 × 10^-4 M/s
• B)5.25 × 10^-5 M/s
• C)7.50 × 10^-6 M/s
• D)6.00 × 10^-6 M/s

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Definitions:

Procurement

The process of obtaining goods or services, typically for business purposes.

Materials Management

The branch of logistics that focuses on physically sourcing, moving, and storing materials, as well as coordinating these operations to ensure the right materials are available at the right time.

Logistics Function

The specific tasks and operations within logistics, focusing on the efficient and effective movement and storage of goods.

Time Utilities

The value added to products or services by making them available when they are needed or wanted by consumers.