Two Isomers (A AndB) of a Given Compound Dimerize as Follows

question 12

Multiple Choice

Two isomers (A andB) of a given compound dimerize as follows: Both processes are known to be second order in reactant, and k₁ is known to be 0.25 L/mol • s at 25° C, where
Rate
In a particular experiment, A and B were placed in separate containers at 25° C, where [A]₀ = 1.0  10^-2 M and [B]₀ = 2.5  10^-2 M. It was found that [A] = 3[B] after the reactions progressed for 3.0 min.
Calculate the half-life for the reaction involving A.

• A) 4.0  10² s
• B) 1.8  10² s
• C) 2.5  10³
• D) 1.7  10¹ s

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