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A Second-Order Reaction Starts with an Initial Concentration of 0

Question 30

Multiple Choice

A second-order reaction starts with an initial concentration of 0.100 mol/L of the reactant.If the rate constant is 1.4 × 10-2 L/mol·s,what is the time required to decrease the initial concentration to 0.050 mol/L? 2A → B
Rate = k[A]2


A) 710 s
B) 1100 s
C) 49.5 s
D) 3.57 s
E) 2100 s

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