A Student Was Trying to Determine the Order of a Chemical

question 72

Multiple Choice

A student was trying to determine the order of a chemical reaction. To accomplish this, the student graphed the concentration - time data using various plotting methodologies. The plots are shown below. What is the order of the reaction?

• A) zeroth order
• B) Need more data to answer the question
• C) second order
• D) first order

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Definitions:

Variable Overhead Rate Variance

The difference between the actual variable overhead incurred and the expected variable overhead based on a standard rate.

Direct Materials Purchases Variance

The difference between the actual cost of direct materials purchased and the expected (budgeted) cost of these materials.

Standard Direct Labor-Hours

The estimated amount of labor time required to produce one unit of output, based on established standards.

Variable Overhead Rate Variance

The difference between the actual and the standard cost of variable overheads in a production process.