The Reaction a → B Follows First-Order Kinetics with a Half-Life

question 44

Multiple Choice

The reaction A → B follows first-order kinetics with a half-life of 21.7 hours.If the concentration of A is 0.023 M after 48.0 hours,what was the initial concentration of A?

• A) 0.0050 M
• B) 0.051 M
• C) 0.51 M
• D) 0.11 M
• E) 2.0 M

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Definitions:

IFRS

International Financial Reporting Standards, which are accounting standards issued by the International Accounting Standards Board (IASB) for financial reporting globally.

Equity Method

An accounting technique used in consolidating the financial statements of entities in which an investment has been made and significant influence is held.

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A company that is completely or majority-owned by another corporation, known as the parent company.

Parent Company

A corporation that owns enough voting stock in another corporation to control its management and operations.