The reaction CH₃NC(g) $\to$ CH₃CN(g) is first-order with respect to methyl isocyanide, CH₃NC. If it takes 10.3 minutes for exactly one quarter of the initial amount of methyl isocyanide to react, what is the rate constant in units of min^-1?

Question

Quizplus · Accepted Answer

For a first-order reaction, the rate constant k can be calculated using the formula k = (1/t) * ln([A]₀/[A]), where [A]₀ is the initial concentration and [A] is the concentration at time t. Since one quarter of the initial amount reacts, [A] = 3/4 [A]₀. Thus, k = (1/10.3) * ln(4/3) = 0.0279 min⁻¹.

The Reaction CH3NC(g) →\to→ CH3CN(g) Is First-Order with Respect to Methyl Isocyanide, CH3NC

The Reaction CH₃NC(g) $\to$ CH₃CN(g) Is First-Order with Respect to Methyl Isocyanide, CH₃NC