The Rate Constant for the First-Order Conversion of a to B

question 39

Multiple Choice

The rate constant for the first-order conversion of A to B is 3.33 hr^-1. How much time will be required for the concentration of A to reach 75% of its original value?

• A) 0.086 hr
• B) 0.83 hr
• C) 0.96 hr
• D) 2.50 hr
• E) 4.44 hr

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