Kinetics

What is the unit of the rate constant (k) for a first-order reaction?

In a reaction A → products, the concentration of A decreases from 0.8 M to 0.2 M in 30 minutes. If the reaction is first order, what is the rate constant k?

Which of the following factors does NOT affect the rate constant (k) of a reaction?

For the reaction 2NO + O₂ → 2NO₂, the rate law is Rate = k[NO]²[O₂]. What is the overall order of the reaction?

The half-life of a first-order reaction is 20 minutes. How long will it take for the reactant concentration to reduce to one-eighth of its initial value?

Which of the following graphs represents a zero-order reaction?

The Arrhenius equation is given by k = A e^(-Ea/RT). What does the term 'A' represent?

In a reaction with rate law Rate = k[A]^m[B]^n, doubling [A] doubles the rate, and doubling [B] quadruples the rate. What are the orders m and n?

For a reaction following first-order kinetics, the plot of which of the following will give a straight line?

In the context of chemical kinetics, what is the significance of the activation energy (Ea)?