Chemical Kinetics And Catalysis Mock Tests

For a first-order reaction A → products, the half-life is 69.3 seconds. What is the rate constant k, and what fraction of A remains after 200 seconds?

According to transition state theory for a bimolecular gas-phase reaction A + B → [AB]‡ → products, the Eyring equation relates the rate constant k to the Gibbs energy of activation ΔG‡. Which of the following expressions correctly represents the Eyring equation? (Here, h is Planck's constant, k_B is Boltzmann's constant, T is temperature, and the standard concentration c° = 1 mol/L is implicit.)

The photochemical reaction of nitrogen dioxide (NO₂) with carbon monoxide (CO) in the atmosphere involves the formation of which intermediate species during the photolysis step?

The Michaelis-Menten equation for enzyme kinetics is v₀ = Vₘₐₓ[S]/(Kₘ + [S]). When the substrate concentration [S] equals Kₘ, the initial velocity v₀ is:

The decomposition of ozone (2O₃ → 3O₂) is proposed to proceed via the following mechanism: Step 1: O₃ ⇌ O₂ + O (fast equilibrium, forward rate constant k₁, reverse rate constant k₋₁). Step 2: O + O₃ → 2O₂ (slow, rate constant k₂). Using the steady-state approximation for the oxygen atom intermediate [O], which of the following rate laws is consistent with this mechanism under the condition that k₋₁[O₂] >> k₂[O₃]? (The rate of reaction is defined as d[O₂]/dt.)

For the reaction 2NO(g) + O₂(g) → 2NO₂(g), the rate law is found to be rate = k[NO]²[O₂]. If the volume of the reaction vessel is suddenly halved at constant temperature, the rate of reaction increases by a factor of: