Order the Following Substrates According to the Increase in S_N2

question 49

Multiple Choice

Order the following substrates according to the increase in S_N2 reaction rate:
(CH₃) ₂CHBr, (CH₃) ₃CBr,CH₃CH₂Br,CH₃Br

• A)(CH₃)₂CHBr < (CH₃)₃CBr < CH₃CH₂Br < CH₃Br
• B)(CH₃)₃CBr < (CH₃)₂CHBr < CH₃CH₂Br < CH₃Br
• C)(CH₃)₃CBr < (CH₃)₂CHBr < CH₃Br < CH₃CH₂Br
• D)(CH₃)₃CBr < CH₃CH₂Br < (CH₃)₂CHBr < CH₃Br
• E)CH₃CH₂Br < (CH₃)₃CBr < (CH₃)₂CHBr < CH₃Br

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Definitions:

Direct Labor Rate Variance

The difference between the expected cost of direct labor and the actual cost incurred, measured in financial terms.

Actual Costs

The real expenses incurred in manufacturing a product, providing a service, or running a business, as opposed to estimated or budgeted costs.

Standard Costs

Pre-determined or estimated costs used for cost control and decision-making purposes, often as a benchmark for measuring performance.

Direct Labor Rate Variance

The difference between the actual cost of labor and the expected (or standard) cost, used in budgeting and cost management.