Podcast
Questions and Answers
What is the rate of reaction proportional to?
What is the rate of reaction proportional to?
- The energy barrier
- The number of effective collisions
- The fraction of effective collisions (correct)
- The number of collisions per unit volume per second
What is the term for the energy barrier that must be overcome before products are formed?
What is the term for the energy barrier that must be overcome before products are formed?
- Threshold energy
- Activation energy (correct)
- Energy of reaction
- Enthalpy of reaction
What is the relationship between Ea and Er for endothermic reactions?
What is the relationship between Ea and Er for endothermic reactions?
- Ea ≥ Ear
- Ea < Er
- Ea = Er
- Ea > Er (correct)
What is the term for the state in which the molecules must have energy at least equal to the threshold energy?
What is the term for the state in which the molecules must have energy at least equal to the threshold energy?
What is required for effective collisions to occur?
What is required for effective collisions to occur?
How is the rate of reaction related to the collision frequency (Z) and the fraction of effective collisions (f)?
How is the rate of reaction related to the collision frequency (Z) and the fraction of effective collisions (f)?
What is the branch of physical chemistry that deals with the rate of chemical reactions and the factors that influence them?
What is the branch of physical chemistry that deals with the rate of chemical reactions and the factors that influence them?
What type of reactions are usually molecular in nature and proceed with a measurable rate at normal temperature?
What type of reactions are usually molecular in nature and proceed with a measurable rate at normal temperature?
Which of the following reactions is an example of a very fast or instantaneous reaction?
Which of the following reactions is an example of a very fast or instantaneous reaction?
What is the main difference between very fast or instantaneous reactions and moderate reactions?
What is the main difference between very fast or instantaneous reactions and moderate reactions?
What type of reaction is characterized by extremely slow rates and may take months to show any measurable change?
What type of reaction is characterized by extremely slow rates and may take months to show any measurable change?
What is an example of a moderate reaction that is typically studied in chemical kinetics?
What is an example of a moderate reaction that is typically studied in chemical kinetics?
What is the unit of rate constant in a chemical reaction?
What is the unit of rate constant in a chemical reaction?
What is the relationship between the rate of a reaction and the concentration of reactants?
What is the relationship between the rate of a reaction and the concentration of reactants?
What is the molecularity of the reaction NH₄NO₂ → N₂ + 2H₂O?
What is the molecularity of the reaction NH₄NO₂ → N₂ + 2H₂O?
What is the significance of the slowest step in a reaction mechanism?
What is the significance of the slowest step in a reaction mechanism?
What is the overall order of a reaction given by the rate law Rate = [A]x[B]y?
What is the overall order of a reaction given by the rate law Rate = [A]x[B]y?
What is the significance of the rate constant (k) in a chemical reaction?
What is the significance of the rate constant (k) in a chemical reaction?
What is the primary factor that determines the rate of a very fast or instantaneous reaction?
What is the primary factor that determines the rate of a very fast or instantaneous reaction?
Which type of reaction is typically associated with a high activation energy?
Which type of reaction is typically associated with a high activation energy?
What is the significance of the rate constant in a chemical reaction?
What is the significance of the rate constant in a chemical reaction?
What is the primary difference between moderate and very slow reactions?
What is the primary difference between moderate and very slow reactions?
Which of the following is NOT a characteristic of very fast or instantaneous reactions?
Which of the following is NOT a characteristic of very fast or instantaneous reactions?
What is the significance of the decomposition of H2O2 in chemical kinetics?
What is the significance of the decomposition of H2O2 in chemical kinetics?
What is the relationship between the kinetic equation and the molar concentration of reactants, when all reactants are at the same concentration?
What is the relationship between the kinetic equation and the molar concentration of reactants, when all reactants are at the same concentration?
What is the graphical representation of the reaction order, when a plot of Vs t is a straight line?
What is the graphical representation of the reaction order, when a plot of Vs t is a straight line?
What is the overall order of the reaction Rate = k[A]2 [B] [C]0?
What is the overall order of the reaction Rate = k[A]2 [B] [C]0?
What is the relationship between the rate of reaction and the concentration of B, when keeping the concentrations of A and C constant?
What is the relationship between the rate of reaction and the concentration of B, when keeping the concentrations of A and C constant?
What is the order of the reaction with respect to A, given the rate law expression Rate = k[A]2 [B] [C]0?
What is the order of the reaction with respect to A, given the rate law expression Rate = k[A]2 [B] [C]0?
What is the relationship between the rate of reaction and the concentration of C, when keeping the concentrations of A and B constant?
What is the relationship between the rate of reaction and the concentration of C, when keeping the concentrations of A and B constant?
For a reaction to occur, what is the minimum energy requirement of the reactant molecules?
For a reaction to occur, what is the minimum energy requirement of the reactant molecules?
What is the relationship between the rate constant (k) and the activation energy (Ea)?
What is the relationship between the rate constant (k) and the activation energy (Ea)?
What is the significance of the fraction of effective collisions (f) in the collision theory of reaction kinetics?
What is the significance of the fraction of effective collisions (f) in the collision theory of reaction kinetics?
What is the relationship between the activation energy (Ea) and the enthalpy of reaction (ΔH) for an endothermic reaction?
What is the relationship between the activation energy (Ea) and the enthalpy of reaction (ΔH) for an endothermic reaction?
What is the role of the activated complex in a reaction mechanism?
What is the role of the activated complex in a reaction mechanism?
What is the significance of the rate of reaction in chemical kinetics?
What is the significance of the rate of reaction in chemical kinetics?
