For a given first-order reaction,after 2.00 min,20% of the reactants remain.Calculate the rate constant for the reaction.

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. Given that 20% of the reactants remain, [A]/[A]₀ = 0.20. Substituting the values, k = (1/120 s) * ln(1/0.20) = 0.0134 s⁻¹.

For a Given First-Order Reaction,after 2