Adaptive Practice
Kinetics
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⏱ 0:30
Easy
What is the unit of the rate constant (k) for a first-order reaction?
Easy
In a reaction A → B, the rate doubles when the concentration of A is doubled. What is the order of the reaction with respect to A?
Medium
The rate constant of a reaction is 3.5 × 10⁻³ s⁻¹ at 300 K. What is the half-life of this first-order reaction?
Easy
Which of the following factors does NOT affect the rate of a chemical reaction?
Easy
For the reaction 2A + B → Products, the rate law is Rate = k[A]²[B]. What is the overall order of the reaction?
Medium
The activation energy (Ea) of a reaction can be determined experimentally by plotting:
Medium
In the Arrhenius equation k = Ae^{-Ea/RT}, what does the pre-exponential factor (A) represent?
Medium
For a zero-order reaction, which of the following statements is TRUE?
Medium
In the context of reaction kinetics, what is the significance of the 'rate-determining step'?
Hard
Consider the reaction: N₂O₅(g) → 2NO₂(g) + ½ O₂(g). If the rate of decomposition of N₂O₅ is 0.010 mol L⁻¹ s⁻¹, what is the rate of formation of NO₂?