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]^0.5. What is the order of the reaction with respect to A?
Explain why the rate law for a reaction cannot generally be predicted from the stoichiometric equation alone.
Given the rate law: rate = k[A]^2[B], what is the order of the reaction with respect to B?
If doubling the concentration of reactant A doubles the rate of the reaction, what is the order of the reaction with respect to A?
A reaction has the rate law: rate = k. What is the effect of increasing the concentration of the reactant?
A reaction has the rate law: rate = k[A][B]. If the initial rate is 0.10 mol/L·s when [A] = 0.2 mol/L and [B] = 0.5 mol/L, what is the value of k?
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]^2. If the rate constant k is 0.5 L/mol·s and [A] = 0.4 mol/L, what is the rate?
Which of the following best describes a second-order reaction? (1) The rate is proportional to the square of the concentration of one reactant. (2) The rate is proportional to the product of the concentrations of two reactants. (3) Both (1) and (2). (4) Neither (1) nor (2).
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 products formed. (4) It gives the equilibrium constant.
Which of the following is a characteristic of a zero-order reaction? (1) The rate is constant. (2) The rate depends on the concentration of reactant. (3) The rate increases as the reaction proceeds. (4) The rate is zero at all times.
Which of the following is a zero-order reaction with respect to A? (1) rate = k[A] (2) rate = k (3) rate = k[A]^2 (4) rate = k[B]
Fill in the blank: In a second-order reaction, the rate is proportional to the ________ of the concentration of the reactant.
Fill in the blank: The rate constant, k, in a rate law is affected by ________.
Fill in the blank: The rate law for a reaction is determined by measuring the ________ of the reaction at different concentrations of reactants.
Fill in the blank: The rate law for a reaction is determined by the ________ step in the reaction mechanism.
True or False: In a zero-order reaction, the rate is independent of the concentration of the reactant.
True or False: The order of a reaction can be a fraction.
True or False: The rate constant k increases as temperature increases.
True or False: The rate law for a reaction can always be determined from the balanced chemical equation.
