A Certain Reaction, Reaction A $\rarr$ Products, Is First Order with Respect ToA

question 10

Multiple Choice

A certain reaction, reaction A $\rarr$ products, is first order with respect toA. Starting with [A] = 0.250M, it takes 45 min to reduce the concentration of A to 0.110M. What is its rate constant for this reaction

• A) 7.9 x 10^-3 min^-1
• B) 1.1 x 10^-1 min^-1
• C) 3.0 x 10^-4 min^-1
• D) 1.8 x 10^-2 min^-1

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