“11th Class Chemistry Chapter 11 Quiz: Reaction Kinetics” deals with the study of the rate at which chemical reactions take place and what factors affect these rates. It is an essential chapter for MDCAT students because once one understands reaction kinetics, one can understand how and why reactions proceed either fast or slow. This is fundamental for quite a number of practical applications in chemistry. Try our MDCAT Quiz of this chapter and test your knowledge to prepare yourself for MDCAT-related questions.
The concept of the rate of reaction is introduced in the beginning, defined as the change in concentration of reactants or products with time. Students learn how to express a reaction rate mathematically and how it is measured experimentally. The effect of temperature, concentration of the reactants, surface area, and the presence of a catalyst is discussed on the reaction rate. The concept of the rate law is introduced, and students learn how to calculate the value of the rate constant (k) and how that varies under changing conditions.
Next, the chapter discusses the Arrhenius equation, which describes the relationship between the rate constant and temperature. The equation helps to explain how temperature affects reaction rates by changing the number of collisions between reactant molecules with sufficient energy to react. Students learn how to calculate the activation energy, Ea, of a reaction, which is the minimum energy that is required for a reaction to occur. The chapter also discusses collision theory, which says that in order for a reaction to occur, reactant molecules must collide with the proper orientation and with sufficient energy.
MDCAT Quiz: Test Your Knowledge of Reaction Kinetics
Our MDCAT Quiz for Chapter 11 challenges students with questions on reaction rates, factors affecting reaction rates, rate laws, Arrhenius equation, activation energy, collision theory, and reaction mechanisms. This quiz will help reinforce your understanding of kinetics and prepare you for MDCAT exam questions on the speed of chemical reactions.
- Test Name: 11th Class Chemistry Chapter 11 Quiz
- Type: Quiz Test
- Total Questions: 30
- Total Marks: 30
- Time: 30 minutes
Note: Answer of the questions will change randomly each time you start the test, once you are finished, click the View Results button.
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Free Flashcards for Reaction Kinetics
Boost your revision with free flashcards for Chapter 11. These flashcards cover essential topics such as rate laws, activation energy, collision theory, Arrhenius equation, and reaction mechanisms. Flashcards are an effective way to reinforce key concepts and ensure you are ready for MDCAT exam questions.
Which of the following statements about the rate of reaction is true?
It decreases over time in all reactions
What does the term 'rate-determining step' refer to in a reaction mechanism?
The slowest step in the mechanism
Which of the following statements about activation energy is true?
It is the energy required to initiate a reaction
The overall order of a reaction is determined by ____________.
Adding up the individual orders of reactants in the rate law
What does the term 'rate constant' represent in a chemical reaction?
The proportionality constant relating rate of reaction to concentration of reactants
In a second-order reaction, if the concentration of reactant A is halved, what happens to the rate of the reaction?
It decreases by half
A reaction has a rate law expression of rate = k[NO]^2. What is its order with respect to NO?
Second
The term 'pre-exponential factor' in the Arrhenius equation represents ____________.
The frequency of collisions between reactant molecules
What is the effect of adding a catalyst on the activation energy of a reaction?
It decreases the activation energy
The rate-determining step in a reaction mechanism is the step that ____________.
Has the highest activation energy
Which of the following expressions represents the rate law for a zero-order reaction?
rate = k[A][B]
What is the effect of increasing the concentration of reactants on reaction rate?
It increases the reaction rate
The collision theory of reaction rates states that _____________.
Reactants must collide with sufficient energy and proper orientation
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