The Second-Order Reaction 2 Mn(CO)₅ → Mn₂(CO)₁₀,has a Rate Constant

question 66

Multiple Choice

The second-order reaction 2 Mn(CO) ₅ → Mn₂(CO) ₁₀,has a rate constant equal to 3.0 × 10⁹ M^-1 s^-1 at 25°C.If the initial concentration of Mn(CO) ₅ is 2.0 × 10^-5 M,how long will it take for 90.% of the reactant to disappear?

• A) 6.7 × 10^-16 s
• B) 7.4 × 10^-15 s
• C) 1.5 × 10^-4 s
• D) 6.0 × 10³ s

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