A Reaction in Solution, a + B→P, Is Studied and Found

question 100

Multiple Choice

A reaction in solution, A + B→P, is studied and found to have the rate law Rate = k [A] with a rate constant of 3.5×10 ^{- 3} s ^{- 1}. If an experiment begins with a concentration of A equal to 0.20 M , at what time after the start of the experiment will the concentration of A be 0.050 M ?

• A) 2.9×10² s
• B) 5.9×10² s
• C) 3.9×10² s
• D) 1.7×10² s
• E) impossible rate law

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