Rate Laws and Order of Reactions
Chemistry ⇒ Chemical Kinetics and Equilibrium
Rate Laws and Order of Reactions starts at 11 and continues till grade 12.
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A reaction has the rate law rate = k[A][B]2. If [A] is doubled and [B] is tripled, by what factor does the rate increase?
A reaction has the rate law rate = k[A]0.5. If [A] is increased from 0.25 M to 1.00 M, by what factor does the rate increase?
A reaction has the rate law rate = k[A]2. If the rate is 0.16 M/s when [A]=0.4 M, what is the rate when [A]=0.2 M?
A reaction has the rate law rate = k[A]2[B]. What is the effect on the rate if [A] is doubled and [B] is kept constant?
A reaction is zero order in reactant A. What happens to the rate if the concentration of A is doubled?
For the reaction 2A + B → C, the experimentally determined rate law is rate = k[A][B]. What is the order with respect to A and the overall order?
If the rate law for a reaction is rate = k[A]1[B]2, and the rate increases by a factor of 8 when [B] is doubled, what is the order with respect to B?
Consider the following data for the reaction: A + 2B → Products.
Experiment 1: [A]=0.10 M, [B]=0.10 M, Initial rate = 0.020 M/s
Experiment 2: [A]=0.20 M, [B]=0.10 M, Initial rate = 0.040 M/s
Experiment 3: [A]=0.10 M, [B]=0.20 M, Initial rate = 0.080 M/s
Determine the order of the reaction with respect to A and B.
For a first-order reaction, the unit of the rate constant k is: (1) mol L-1 s-1 (2) s-1 (3) L mol-1 s-1 (4) mol-1 L s-1
Which of the following best describes the rate law for a reaction? (1) It expresses the relationship between the rate of a reaction and the concentrations of reactants. (2) It gives the mechanism of the reaction. (3) It shows the energy change during the reaction. (4) It describes the equilibrium constant.
Which of the following is a possible order for a reaction? (1) 0 (2) 1 (3) 1.5 (4) All of the above
Which of the following is NOT a characteristic of a zero-order reaction? (1) The rate is independent of reactant concentration. (2) The rate constant has units of mol L-1 s-1. (3) The rate decreases as the concentration decreases. (4) The rate law is rate = k.
If the rate of a reaction does not change when the concentration of a reactant is changed, the reaction is _______ order with respect to that reactant.
The overall order of the reaction 2A + B → C, with rate law rate = k[A][B]2, is _______.
The rate law for a reaction is rate = k[A][B]2. If [A] is doubled and [B] is halved, the rate changes by a factor of _______.
The rate law for a reaction is rate = k[A]1[B]2. If [A] is halved and [B] is doubled, the rate changes by a factor of _______.
True or False: A reaction with a rate law rate = k[A]1[B]0 is first order overall.
True or False: The coefficients in a balanced chemical equation always indicate the order of the reaction.
True or False: The order of a reaction can be a fraction.
True or False: The rate constant k changes with temperature.
