When the Concentration of a Is Doubled,the Rate for the Reaction

question 16

Multiple Choice

When the concentration of A is doubled,the rate for the reaction: 2 A + B $\rarr$ 2 C quadruples.
When the concentration of B is doubled the rate remains the same.Which mechanism below is consistent with the experimental observations?

• A)Step 1: A + B ? D (fast equilibrium) Step 2: A + D ? 2 C (slow)
• B)Step 1: A + B ? D (slow) Step 2: A + D ? 2 C (fast equilibrium)
• C)Step 1: 2 A ? D (slow) Step 2: B + D ? E (fast)
• Step 3: E ? 2 C (fast)
• D)Step 1: 2 A ? D (fast equilibrium) Step 2: B + D ? E (slow)
• Step 3: E ? 2 C (fast)

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Definitions:

Direct Labor Rate

The average hourly wage paid to workers directly involved in the production process.

Master Budget

A comprehensive financial planning document that combines all of the individual budgets within a company into one overall budget.

Raw Materials

The basic materials and components used in the manufacturing process to produce finished goods.

Direct Labor

The compensation provided to workers who are directly engaged in manufacturing goods or delivering services.